MLBTR Podcast: Skubal’s Injury, The Marlins’ Catchers, Eldridge Called Up, And Volpe Sent Down

The latest episode of the MLB Trade Rumors Podcast is now live on SpotifyApple Podcasts, and wherever you get your podcasts! Make sure you subscribe as well! You can also use the player at this link to listen, if you don’t use Spotify or Apple for podcasts.

This week, host Darragh McDonald is joined by Anthony Franco of MLB Trade Rumors to discuss…

Plus, we answer your questions, including…

  • What kind of package could the Rockies get if they traded Chase Dollander? (46:20)
  • What can the Brewers do to address the left side of the infield? (56:50)
  • Instead of using guys like Scott Kingery or Nicky Lopez on the bench, shouldn’t the Cubs call up a better player from the minors? (59:35)

Check out our past episodes!

  • The Alex Cora Situation, Lucas Giolito Signs, And The Phillies Fire Rob Thomson – listen here
  • Kevin McGonigle, The Padres’ Franchise Valuation, And Edwin Díaz To Miss Time – listen here
  • Lenyn Sosa Traded, And Injury Concerns For The Astros, Cubs And Orioles – listen here

The podcast intro and outro song “So Long” is provided courtesy of the band Showoff.  Check out their Facebook page here!

Photo courtesy of Evan Petzold, Imagn Images

Marlins Notes: Alcantara, Rotation, Ramirez

Sandy Alcantara‘s name is all but perpetually ingrained on the rumor mill. The Marlins are always in a state of needing to keep an open mind to trade offers regarding their stars, and he’s currently one of two members of the roster earning more than $4MM. (Closer Pete Fairbanks is earning $13MM on a one-year deal.)

Alcantara is earning $17MM in the final season of his contract, though the team holds a $21MM club option (or $2MM buyout) on the 30-year-old for the 2027 season. After a shaky 2025 campaign — his first season back from Tommy John surgery — Alcantara looks a bit more like his old self. His 3.04 ERA is quite strong, but his rate stats are less encouraging.

Alcantara’s 16.1% strikeout rate is about six points shy of average. His 7.8% walk rate is better than average but still up a ways from his 5.6% peak. Ditto his 47.2% grounder rate — it’s about five points higher than par but about six points shy of his previous top levels. On the plus side, Alcantara’s 97.3 mph average four-seamer remains strong, he’s getting good results on a new 90.1 mph cutter, and his overall 11.2% swinging-strike rate is right in line with the league average, thereby suggesting his strikeout rate could climb up in the weeks ahead.

It’s still been a strong start overall, and other clubs would surely love to get their hands on Alcantara in hopes of restoring some whiffs and adding a former Cy Young winner to their playoff rotations. However, Ken Rosenthal of The Athletic cautions that Alcantara isn’t a lock to be traded. Beyond being a leader in the clubhouse, he’s a personal favorite of owner Bruce Sherman.

It’s not as though the Marlins, who opened the season with a comically low payroll in the $73-74MM range, feel financial pressure to trade Alcantara. If anything, the opposite might hold true. The Major League Baseball Players Association has filed grievances against the Marlins and a few other bottom-of-the-barrel payroll clubs in recent years, arguing that said teams aren’t sufficiently spending the money they receive from larger clubs via MLB’s revenue-sharing system.

In all likelihood, Alcantara will again command plenty of headlines this summer as the Aug. 3 trade deadline approaches. Miami is currently in second place in the NL East, but that’s a nominal feat in a generally disappointing division. The Fish are 8.5 games behind the Braves for first place. They’re technically only four games out in the Wild Card chase, but at 16-19 overall with a -28 run differential, the outlook isn’t especially rosy.

Rosenthal suggests that the Marlins could instead listen on righties Janson Junk and Max Meyer this summer, but Junk is a journeyman with a similarly low strikeout rate (17.4%) and a swinging-strike rate (8.4%) that sits considerably shy of league average. It’s doubtful another team’s going to part with much to acquire him, although given that he was a minor league free agent pickup in the 2024-25 offseason, any return would be considered found money. Meyer would make a far more compelling trade target (37 innings, 2.68 ERA/3.60 SIERA, 26 K%, 8.4 BB%), but the Marlins control the former No. 3 overall pick for three more years beyond the current season. If he’s pitching like this in July/August, the Marlins should have an even higher ask for him than they would Alcantara.

Miami probably hoped that free-agent pickup Chris Paddack would pitch well enough to make himself a deadline candidate as well, but that didn’t happen. The Fish designated him for assignment this morning, cutting bait on a $4MM contract and opening a spot in the rotation in the process. Reliever William Kempner is up from Triple-A Jacksonville to give the bullpen a fresh arm, but the Marlins will need a starting pitcher this Friday.

Braxton Garrett and top prospect Robby Snelling have been mentioned as candidates, but Fish On First reports that Garrett is still slated to make his scheduled start for Jacksonville tonight. If Garrett indeed takes the mound, he won’t be an option to start Friday. That’d be Snelling’s natural turn in the rotation. He’s been starting once every seven days in Triple-A, and his last start came on Friday, May 1.

Snelling, 22, is a former No. 39 overall pick who came to Miami from the Padres as part of the Tanner Scott trade. His stock was down a bit at the time of the swap, but he’s rebounded nicely and now ranks among the sport’s 100 best prospects. So far in six Triple-A starts, he’s posted a 1.86 ERA, a mammoth 40% strikeout rate and a concerning 13.6% walk rate. He has kept 57% of batted balls against him on the ground. He looks to have little left to prove in Triple-A after also posting a 1.27 ERA there in 11 starts last year (2.51 ERA overall in 25 starts between Double-A and Triple-A). He’s not on the 40-man roster, but the Fish have an open spot after Paddack’s DFA.

While the Marlins’ ability to develop young pitching always makes their rotation a point of focus, their catching situation has been a long-running point of focus for the opposite reasons. Miami has struggled to find a solution behind the plate since trading J.T. Realmuto to the Phillies nearly a decade ago. They’ve cycled through Jorge Alfaro, Jacob Stallings, Nick Fortes with cameos from veteran backups like Sandy Leon, Chad Wallach and Bryan Holaday.

There’s more hope on the Marlins’ catcher horizon than at any point in recent memory. Liam Hicks is enjoying a breakout showing at the plate, and Miami just called up top prospect Joe Mack for his major league debut. If Mack hits the ground running, Miami could shift from that revolving-door setup to suddenly having a pair of solid catchers on the roster — a luxury they haven’t enjoyed at any point in recent history.

Mack’s promotion coincided with a demotion for former top prospect Agustin Ramirez, but despite Ramirez’s immense defensive struggles behind the dish, the Marlins aren’t giving up on him as a catcher. Manager Clayton McCullough told the Marlins beat this week that his message to Ramirez was simple (link via MLB.com’s Christina De Nicola): “You’re going to go down to Triple-A, and you’re going to continue to catch. You’re not the first young player that has come up and had bouts of struggle and had to get optioned.”

Ramirez caught only 605 innings last year but was still dinged for a remarkable -14 Defensive Runs Saved. Statcast pegged him as the game’s least-effective catcher in terms of both throwing out would-be base thieves and even more so at blocking balls in the dirt. His minus-28 “blocks above average” was nearly double the second-worst player on the list (a 35-year-old Salvador Perez). Things haven’t improved in 2026, and Ramirez’s bat wilted as well; he hit just .230/.318/.345 in 129 plate appearances.

Ramirez was always a bat-first catcher, and the Marlins don’t have clear long-term options at first base or designated hitter. If he can get his swing back on track, there could yet be a path to seeing semi-regular time between first base, designated hitter (where he’d presumably share times with Hicks) and perhaps some occasional starts behind the plate. It’ll be Mack and Hicks getting the major league opportunities right now, but Mack is just getting his feet wet and Hicks has already cooled a bit after a blistering start to the season.

Marlins Recall Joe Mack For MLB Debut, Option Agustin Ramirez

May 4: Miami has formally announced both moves. Mack has been recalled from Jacksonville, and Ramirez has been optioned there in his place.

May 3: The Marlins will promote top catching prospect Joe Mack prior to tomorrow’s game with the Phillies, SportsGrid’s Craig Mish reports.  Agustin Ramirez will be optioned to Triple-A in the corresponding 26-man roster move, and Mack is already on Miami’s 40-man roster.

Mack was the 31st overall pick of the 2021 draft, and after steadily working his way up the Marlins’ minor league ladder, the 23-year-old is now on the cusp of his Major League debut.  Baseball America ranks Mack as the 50th-best prospect in the sport, and pundits like The Athletic’s Keith Law (52nd), MLB Pipeline (54th) and ESPN.com (61st) also have Mack listed within their top-100 rankings.

The consensus is that Mack is ready for the big leagues on defense alone, as he has received praise for his framing, blocking, and strong throwing arm.  There have been fewer questions about his ability to hit since Mack bounced back from a poor 2023 season to post much better numbers across the last three minor league campaigns, and he has hit .249/.334/.444 with 21 home runs over 515 plate appearances with Triple-A Jacksonville.

Mack’s approach is a little all-or-nothing since he is primarily looking to pull the ball in the air, but even if this leads to his share of strikeouts, Mack has enough power to capitalize when he does make contact.  Over 103 PA in Jacksonville this season, Mack’s walk rate has shot up to 19.4% (from 8.5% in 412 Triple-A PA in 2025) and he has reduced his strikeout rate from 27.9% to 21.4%.

It was seen as just a matter of time before Mack got the call to the Show, even if the Marlins opted against including Mack on their Opening Day roster.  Miami continued with the catching tandem of Ramirez and Liam Hicks, and Hicks has broken out to hit .309/.366/.557 with seven homers over 112 PA while splitting time between catcher, first base, and DH.

Ramirez, however, is hitting .230/.318/.345 with two home runs over 129 PA, making him the odd man out of the catching picture.  Ramirez went yard 21 times in 2025 while batting .231/.287/.413 in 585 PA, but his dropoff in power has taken away his most potent offensive weapon.  Since Ramirez is also arguably the worst defensive catcher in baseball, there wasn’t much of a case to continue giving him at-bats while Mack was ready to go at Triple-A, as MLBTR’s Darragh McDonald argued earlier this week.

Since Hicks is also nothing special in terms of glovework, putting Mack behind the plate should have an immediate impact on the Marlins from a defensive standpoint.  While obviously the hope is that Mack can adjust quickly as a big league hitter, producing even average offense in his first looks at MLB pitching would be a bonus along with the ripple effect that Mack’s defense brings to Miami’s run-prevention efforts.

Because Mack is only coming up to the majors now, the Marlins wouldn’t earn a bonus draft pick via the Prospect Promotion Incentive if he wins NL Rookie of the Year (or has a top-three MVP finish before he is eligible for arbitration).  However, Mack himself would earn a full year of big league service time if he does manage a top-two ROY finish, and he is currently on pace to achieve Super Two status and an extra year of salary arbitration eligibility if he remains on Miami’s active roster.

The Marlins Should Make A Change Behind The Plate

Agustín Ramírez was the worst defensive catcher in the majors last year. The Marlins haven’t yet given up on him but perhaps they should. They have one of the top catching prospects knocking on the door and there’s an open path for them to surge into contention this year.

31 different catchers caught at least 600 innings in 2025. J.T. Realmuto led the way with 1151 1/3, almost double the 605 2/3 caught by Ramírez. Despite catching notably fewer innings than most of the catchers in this sample, Ramírez led the pack with ten errors. He allowed 19 passed balls, which was more than twice as much as the next person on that list, as no one else allowed more than nine. He was also behind the plate for 36 wild pitches, which are technically the fault of pitchers, but a good catcher can occasionally save his teammates from those. Four of those 31 catchers allowed a few more wild pitches but all in larger sample sizes. In short, if Ramírez was catching, the ball was at the backstop a lot.

Those traditional stats aligned with more advanced ones. Ramírez was credited with minus-14 Defensive Runs Saved. Only Salvador Perez, at minus-15, was worse than him in that column. The Fielding Run Value stat at FanGraphs had him last at minus-12. Statcast credited him with minus-13 catching runs, ahead of only Edgar Quero. Baseball Prospectus was less down on him overall, having him merely as one of the 13 worst catchers, but they were the one outlet that didn’t like his framing work.

Presumably, the Marlins have been willing to tolerate this in the hopes that there’s a path to improvement. Ramírez has been a very strong hitter in the minors and could be an asset if his defense got to more passable levels. He put up a combined line of .268/.357/.473 at various rungs of the minors from 2023 to 2025, leading to a 128 wRC+. His 11.5% walk rate and 18.4% strikeout rate were both strong figures and he hit 46 home runs in 1,120 plate appearances.

But his bat hasn’t quite clicked in the majors yet, perhaps due to him focusing so much on trying to improve his defense. Ramírez did hit 21 home runs last year but with a low batting average and poor walk rate, leading to a lopsided line of .231/.287/.413. That resulted in a 91 wRC+, indicating he was nine percent below league average. That’s not bad for a catcher since backstops tend to be about ten points below par, but it’s not great when considering his glovework.

Going into 2026, there was an argument for moving Ramírez to a role as a first baseman and designated hitter. Moving to first would require some work but Ramírez did play the position some in the minors. Though Ron Washington will tell you moving to first is not easy, catching is considered the most rigorous position on the field and playing anywhere else would afford Ramírez more ability to focus on his hitting.

All of that is especially true when considering the presence of Joe Mack, who is one of the top catching prospects in the league. He is considered to be a very strong defender behind the plate. He reached the Triple-A level in 2025, getting into 99 games. His offense is considered more questionable than his defense but he slashed .250/.320/.459 for a 107 wRC+ with the Jumbo Shrimp last year. He was added to the 40-man roster in November to keep him out of the Rule 5 draft.

The Fish could have gone with Mack and bumped Ramírez to first base, a position that was fairly open. They didn’t go that way. They have continued to stick with Liam Hicks and Ramírez as their catching duo, splitting the time almost equally. Ramírez has been behind the plate for 122 innings, compared to 123 for Hicks. Hicks is doing fine, pairing adequate defense with a .314/.354/.523 line in the early going this year, though he’s not great with the running game.

Ramírez, on the other hand, hasn’t shown many signs of improvement. His 122 innings caught this year are about a fifth of last year’s 605 2/3. He already has four errors, almost half the ten he had last year. That’s tied with Quero for the league lead. He has allowed three passed balls, a better pace than last year but not by much. Francisco Alvarez is the only guy with more, at four. Ramírez has been behind the plate for nine wild pitches already, a worse pace than last year. Only Logan O’Hoppe and Drew Millas have allowed more. FanGraphs and Statcast have soured on his framing a bit, though in a very small sample.

The Ramírez/Hicks pairing impacts their pitchers in other ways as well, as neither is great as controlling the running game. The Fish allowed 191 stolen bases last year, easily the most in the majors. The Astros were a distant second on that list with 157. Miami only caught 24 attempted steals on the year. Technically, that was higher than the 23 that the Royals nabbed, but that was because K.C.’s catchers were run on far less, only allowing 47 steals. So far in 2026, the Marlins have allowed 37 steals, again the most in the majors. They’ve only caught three.

Catchers can sometimes provide value in other ways which are difficult to measure, such as working with a pitching staff. Even there, it’s hard to give the Ramírez and Hicks much credit. Starting last year, the Marlins began calling pitches from the dugout. Ramírez and Hicks might still be doing something in terms of communication and providing confidence but it’s fair to say they’re impacting intangibles less than catchers on other teams.

The offense from Ramírez also continues to lag, as he is currently sporting a .235/.303/.367 line and 84 wRC+ this year. It’s a small sample but he’s now up to 694 career plate appearances with a .231/.290/.406 line and 90 wRC+.

Mack, meanwhile, continues to do well in Jacksonville. In his first 83 plate appearances for the Jumbo Shrimp this year, he has three home runs and a huge 19.3% walk rate. Even with a subpar .267 batting average on balls in play, he has a .224/.373/.388 line and 115 wRC+ this year.

Perhaps there are service time considerations at play. Mack is a consensus top 100 prospect in the league. The Fish could have put him on the Opening Day roster and made him eligible to earn the club a bonus draft pick as part of the prospect promotion incentive. They opted not to do that. At this point, they probably are thinking about the flip side of the PPI. Eligible players who are not promoted in the first few weeks of the season can be awarded a full year of service retroactively if they finish in the top two of rookie of the year voting.

If that were to happen, it would be the worst of both worlds for the Marlins, in a sense. They would not get a bonus pick and their window of club control over Mack would be a standard six, as opposed to being juiced to six-plus. From the team’s perspective, you’d ideally not be in that middle spot.

But the downside of keeping Mack down is that the major league club is likely worse off. With prospects, there are no guarantees of immediate success, so it can’t just be assumed that Mack will boost the big league squad. But since a big part of his appeal is his defense, he should be a lock to at least be an upgrade over Ramírez in that regard. On offense, perhaps he would struggle with the promotion, but it’s not as though Ramírez is crushing the ball so far this year.

The Marlins have received a combined .192/.248/.279 line from the DH spot this year, resulting in a 47 wRC+ which places them ahead of just the Pirates and Rockies. Putting Ramírez in there, and having him focus less on catching, could theoretically be good for the lineup.

And turning back to the PPI situation, there’s also some space opening up. Sal Stewart has nine home runs, a .291/.385/.602 line and 1.2 wins above replacement, in the eyes of FanGraphs. JJ Wetherholt is at 1.1 fWAR and Moises Ballesteros at 0.9. On the pitching side, Nolan McLean is at 1.3 fWAR and Rhett Lowder 1.0. It’s theoretically possible for Mack to come up and have a monster finish while some of those other guys struggle, but getting into the top two of voting is going to be tough when those guys already have a decent head-start.

On top of all that, there’s a window for the Marlins to have a special season. On paper, they came into the year as the fourth-best team in the division, in the eyes of most evaluators. But the Phillies and Mets are both out to awful starts. It’s still early, and the Marlins are only four games clear of those two clubs. But since the Mets and Phillies are 9-19 right now, there’s a real chance they can’t climb back into contention and end up selling at the deadline. In that situation, the Marlins would still have to battle the other N.L. clubs for a wild card spot, since it feels like Atlanta will run away with the division, but Miami’s chances feel a bit better than a few weeks ago even if they’re only 13-15.

Even putting aside the early-season standings, which could change in a hurry, this feels like a move the Marlins should make. All signs point to Mack being the long-term answer behind the plate. Ramírez, meanwhile, would seemingly be better served as a bat-first player. Perhaps the Marlins are hoping that another club will take a chance on Ramírez as a catching project, which would allow them to use him in a deadline deal, but it’s hard to envision that when progress isn’t really being made.

Photo courtesy of Mady Mertens, Isaiah J. Downing, Jim Rassol, Imagn Images

Marlins Option Joe Mack, Ryan Gusto

The Marlins announced their latest round of camp cuts this morning, and the most notable among that group were the decisions to option top catching prospect Joe Mack and right-hander Ryan Gusto to the minor leagues.

Mack, 23, is a consensus top-100 prospect and a first rounder from Miami’s 2021 draft class. After setting Double-A on fire for 13 games to open the year last season, Mack was promoted to Triple-A and hit a solid .250/.320/.459 with 18 homers, 18 doubles, and 2 triples in 100 games at the level. That was good for a 107 wRC+ at the level, which isn’t quite up to par for the typical top prospect but is nonetheless impressive considering his age and position. A 27.9% strikeout rate at Triple-A last year exacerbates concerns from scouts about Mack’s contact abilities, but the overall package is undoubtedly impressive.

Those questions are perhaps why it was reported last month that, while Mack would get the opportunity to fight his way onto the MLB roster, the team’s preference was for him to begin the season at Triple-A and hand catching duties over to the combination of Liam Hicks and Agustin Ramirez. Hicks was a pick in the 2024 Rule 5 draft who enjoyed a solid rookie season for the Marlins last year. He turned in a 98 wRC+ in 119 games behind the plate, though lackluster defensive metrics left him to be worth just 1.0 fWAR and 1.3 bWAR. Ramirez was also a rookie last year, and was the prize of the team’s Jazz Chisholm Jr. trade with the Yankees at the 2024 trade deadline. Ramirez slugged 21 homers in 136 games but got on base at just a .287 clip, leaving him with a 91 wRC+. He split time between catcher, first base, and DH in his first year as a big leaguer without showing strong defense at any of those positions.

There’s little doubt that Mack will be the long-term answer for the Marlins behind the plate as long as he hits at an even close to league average clip. He’s a well-regarded defender behind the plate who has been lauded for his strong arm and is far and a way the best defender of the team’s three young catchers according to scouts. With that being said, Mack is still young enough with enough questions about his hitting that it’s somewhat understandable that the Marlins would be interested in giving him more time to develop in the minor leagues. That’s all the more true after a tough spring at the plate, where he went just 3-for-24 with seven strikeouts. There’s little doubt that Mack will make his MLB debut at some point this year so long as he stays healthy, but in the meantime Christina De Nicola of MLB.com writes that the Marlins are encouraging him to work on his approach at the plate and spend more time getting familiar with the ABS strike zone while he waits for that opportunity at Triple-A.

As for Gusto, the right-hander was a key piece of the return for Jesus Sanchez at last year’s trade deadline. Gusto made his big league debut with the Astros just last year and was a solid swing man for Houston, posting a 4.92 ERA with a 4.16 FIP in 86 innings split between ten starts and 14 relief appearances. After being dealt to the Marlins, however, Gusto struggled badly. He made three starts in Miami and allowed 17 runs on 19 hits (including four home runs) and walked (8) nearly as many batters as he struck out (10), ending with a 9.77 ERA in 15 2/3 innings of work. He struggled just as badly at Triple-A, and while he looked a bit better this spring he’s still ultimately squeezed out of a crowded Marlins rotation and better serves the Marlins as stretched-out depth than converting to a short relief role in the bullpen.

Marlins Notes: Mack, Ramírez, Junk

The Marlins have three catchers on their 40-man roster. Barry Jackson of the Miami Herald reports that the club would prefer to open the season with Agustín Ramírez and Liam Hicks in the big leagues, with Joe Mack optioned to Triple-A, though it’s possible Mack could win a job.

Ramírez has shown a lot of promise with the bat but was arguably the worst defensive catcher in the majors last year. In 605 2/3 innings, he was behind the plate for 19 passed balls and 36 wild pitches. In terms of the passed balls, Ramírez lapped the field, with no other backstop allowing more than nine. Four catchers were present for a larger totals of wild pitches but they all had larger samples of playing time.

Modern analytics also agree. Ramírez was credited with minus-14 Defensive Runs Saved last year. The only guy worse was Salvador Perez at minus-15, in a larger sample of innings. Fielding Run Value had Ramirez at -12, worse than everyone except for Edgar Quero. Statcast ranked Ramírez as one of the worst catchers in terms of blocking and controlling the running game, though his framing was well regarded.

It feels inevitable that Ramírez will get moved to designated hitter or first base, where he has spent some time in the minors. The Fish don’t really have a slam-dunk first baseman standing in the way, as they’re going into the season with a hodgepodge group consisting of Hicks, Christopher Morel, Connor Norby, Griffin Conine and Graham Pauley. But the Marlins are apparently not quite ready to make that move. Jackson reports that they still want to give Ramírez a shot to show some improvement behind the plate and potentially stick as a viable backstop.

That could leave Mack trapped at Triple-A for a while longer, even though he feels like the long-term answer behind the plate. The 31st overall pick from the 2021 draft, Mack played 112 games last year, 99 of those at the Triple-A level. His 27.9% strikeout rate at that level was a bit high but he hit 18 home runs and slashed .250/.320/.459 for a 107 wRC+. That’s great production for a catcher, especially one with a strong defensive reputation like Mack. The Marlins added him to their 40-man roster in November to keep him out of the Rule 5 draft.

Going into 2026, Mack is a consensus top 100 prospect, which means the prospect promotion incentive factors in. If the Marlins were to carry him on the roster early enough to get a full year of service time, he could net them an extra draft pick by playing well enough to garner awards consideration. If they don’t call him up that early, he could earn a full year of service retroactively with a top two finish in Rookie of the Year voting.

If Mack ends the 2026 season with a full year of service, he would be on pace for free agency after the 2031 season. If the Marlins hold him down long enough to not get a full year of service and he doesn’t get one retroactively, then that schedule would be pushed into the future by a year.

Turning to the pitching staff, right-hander Janson Junk suffered a right ankle sprain about a week ago and was in a walking boot for a while. It seems he is moving quickly past the issue. Per the MLB.com injury tracker, he was scheduled to throw 15 to 18 pitches off a mound yesterday. There hasn’t been word on him since, so he presumably threw without issue. He posted a 4.17 earned run average for the Marlins in a swing role last year. As of now, he will probably open the season as a long reliever but could earn a rotation job if injuries open a path for him.

Photo courtesy of Jim Rassol, Imagn Images

Marlins Select Three Players

The Marlins selected catcher Joe Mack and right-handers Will Kempner and Josh White onto the 40-man roster to keep them out of the Rule 5 draft. Miami designated outfielder Joey Wiemer for assignment in a corresponding move, as they’d previously had two vacancies.

Mack is one of the more obvious names to keep away from the Rule 5 draft. A supplemental first-round pick out of high school in 2021, he has developed into one of the better all-around catching prospects in the majors. The left-handed hitter connected on 21 homers with a .257/.338/.475 slash line in 468 plate appearances between the top two minor league levels.

Most of that production came in Triple-A. Mack is on the doorstep of the majors and he’s a better defensive catcher than either Liam Hicks or Agustin Ramirez. Mack has the best chance of the group to be Miami’s long-term answer behind the plate. It’s not out of the question he breaks camp, and he’ll almost certainly debut at some point next season.

Kempner, 24, was acquired from the Giants for international bonus pool room last offseason. A third-round pick out of Gonzaga in 2022, he’s a pure reliever who turned in a 2.26 ERA across 67 2/3 innings between a trio of levels in his first season in the Miami system. Kempner fanned more than a third of opponents but walked upwards of 14% of batters faced. He sits around 95 MPH and could be an up-and-down reliever next season. The 24-year-old White should also be in that mix after running a monster 40.8% strikeout rate across 67 2/3 frames between the top two levels. The former fifth-round draftee sits in the 93-94 MPH range and leans heavily on a plus mid-80s slider.

Miami claimed Wiemer, a one-time top prospect, off waivers from Kansas City in August. He played in 27 games down the stretch, hitting .236 with a trio of home runs but striking out 23 times in 61 trips to the plate. Wiemer has big physical tools but has been too strikeout prone throughout his career. He’s a .205/.279/.359 hitter in a little under 500 plate appearances. Miami can non-tender him on Friday and try to bring him back on a minor league contract.

Marlins Notes: Infield, Outfield, Mack

The Marlins didn’t make the playoffs in 2025 but are entering the winter with a bit more optimism compared to a year ago. Barry Jackson of The Miami Herald took a look at the Miami position player mix and provided some details on the club’s aspirations for the winter.

Jackson had previously reported that the club was likely going to be targeting a veteran bat this winter. In today’s reporting, he adds that first base is the most likely place for them to make that addition, though third base and the outfield corners are mentioned as other possibilities.

First base is a sensible spot to target, as the Fish don’t really have anyone locked in there. Seven different players spent some time at that spot in 2025, though Eric Wagaman got the bulk of the action. Wagaman hit just .237/.281/.375 for a wRC+ of 79. That indicates he was 21% below league average at the plate. Teams generally hope to get above-average offense out of the first base spot, so that’s a natural spot to look for more production.

The free agent class is headlined by guys like Pete Alonso, Josh Naylor and Ryan O’Hearn. The Marlins have occasionally thrown out notable multi-year deals but president of baseball operations Peter Bendix has largely kept his wallet in his pocket since getting his job. Two offseasons ago, his big signing was one year and $5MM for Tim Anderson. Last winter, it was $3.5MM for Cal Quantrill.

Perhaps he will get more aggressive with the Marlins coming off a respectable 2025 season, though it may be more likely he goes for guys who can be had on short-term deals such as Rhys Hoskins or Paul Goldschmidt. The non-tender deadline will shake loose a few more guys, with Nathaniel Lowe and Ryan Mountcastle some of the possibilities there. Christian Walker and Alec Burleson are speculative trade candidates.

Signing a third baseman is also a possibility but Jackson reports that the most likely scenario is Connor Norby and Graham Pauley battling for the job, or perhaps even forming a platoon. Pauley seems to have a decent floor as a strong defender. In 390 innings at the hot corner this year, he was credited with three Defensive Runs Saved and six Outs Above Average. Offensively, he slashed .224/.311/.366 for a wRC+ of 90. Perhaps there’s more to come with the bat. His 11.4% walk rate and 19.6% strikeout rate were both above average and he may have been held back by an unfortunate .262 batting average on balls in play. But even with offense close to average, he could be a valuable player thanks to the glove.

Norby, on the other hand, received grades of -5 DRS and -4 OAA at third this year. He didn’t make up for that with the bat, as he slashed .251/.300/.389 for a wRC+ of 90. However, he has slashed .293/.369/.493 at the Triple-A level going back to the start of 2023, which translates to a 123 wRC+. Bringing that kind of production to the majors would be great but he’ll be a bit of a question mark until that happens.

As for the platoon possibility Jackson mentions, Norby is right-handed and Pauley left-handed. Both players have reverse splits in their big league careers thus far but the sample size is still pretty small for both. Neither had huge splits in the minors but major league pitching might be a different story in the long run.

In the outfield, Jackson suggests the investment is likely to be small, suggesting it could be similar to the club signing Heriberto Hernández to a minor league deal last winter. They should have Kyle Stowers and Jakob Marsee in two spots, with room for guys like Hernández, Griffin Conine, Dane Myers, Joey Wiemer and others.

Behind the plate, Bendix already gave a public vote of confidence to Agustín Ramírez, despite his poor defensive metrics. If he is going to get another shot behind the plate next year, that could leave Joe Mack in Triple-A. Jackson reports that the club would prefer Mack to start the year in Jacksonville, but he will have a chance to earn a job in spring training.

Mack is one of the top catching prospects in the league. He’s not yet on the 40-man roster but would be eligible for this winter’s Rule 5 draft if not added, so the Fish will surely give him a spot in order to protect him from being selected. He’s considered a strong defender and he slashed .250/.320/.459 for a 108 wRC+ in 99 Triple-A games this year.

Promoting him to the majors seems justified at this point, but if Ramírez is going to get the bulk of the playing time as the Marlins continue to give him a shot to improve defensively, then perhaps Mack would be better served staying in Triple-A to get regular playing time.

It seems like there’s even less chance of a move up the middle, as Jackson reports the club is happy with the Otto López and Xavier Edwards tandem. López has produced subpar offense but the move to shortstop has worked well. He was credited with 7 DRS and 4 OAA at that spot this year. He can also steal 15-20 bases a year, adding to his value. Edwards got poor grades at short but has been great since kicking over to the other side of the bag. He tallied 12 DRS and 9 OAA at the keystone this year, with 27 steals and roughly average offense.

Photo courtesy of Eric Hartline, Imagn Images

The Marlins’ Catching Conundrum

Miami has struggled to find a viable option behind the plate since trading away J.T. Realmuto ahead of the 2019 season. After Jorge Alfaro, who returned in the Realmuto deal, failed to provide consistent results, the Marlins have shuffled through a mix of veterans and fringe MLBers over the past few seasons. Miami backstops finished 29th in OPS at the position in both 2023 and 2024.

Agustin Ramirez seems like the answer, at least on offense. Acquired in the Jazz Chisholm Jr. trade, the top prospect popped 21 homers and stole 16 bases in his first taste of MLB action. Ramirez paced the team in doubles and total bases. He was a fixture in the heart of the lineup since getting promoted in late April.

The problem with Ramirez as Miami’s solution at catcher was the catching part. He led the league with 19 passed balls, more than twice as many as the next-closest player (Shea Langeliers at nine). Ramirez also led all catchers with 10 errors, despite only making 71 starts at the position. The throwing aspect of the job didn’t go much better. Ramirez allowed 83 steals and threw out just 8 base runners, good for a paltry 8.8% caught stealing rate. He ranked dead last in Statcast’s CS Above Average metric, which compares the number of extra caught stealings to the expectation of an average catcher.

Ramirez made 61 starts at DH in his rookie season. While that may be his ultimate home, president of baseball operations Peter Bendix hasn’t given up on Ramirez in the field. Speaking to reporters on Wednesday, Bendix said Ramirez still has “the ability to be a major league catcher and also needs to improve a lot to be able to consistently achieve that level” (link via Kevin Barral of Fish on First). It isn’t the strongest endorsement, but it’s enough to keep the door ajar on Ramirez’s future at the position.

Liam Hicks functioned as Miami’s backup catcher for the majority of the 2025 season. He started 49 games behind the plate, while also making 23 starts at first base and 20 at DH. Hicks joined the team as a Rule 5 selection from Detroit. He posted a solid 98 wRC+ across 390 plate appearances, though the power was lacking. Hicks hit just a half dozen home runs and finished with a .099 ISO. He doesn’t have the type of thump typically associated with 1B/DH types, so sticking at catcher might be his only avenue to consistent playing time.

The main issue with Hicks as a long-term option is the same one that plagues Ramirez. Hicks allowed 51 stolen bases last season, while catching just six would-be thieves. He had the fifth-worst mark in Statcast’s CS Above Average metric.

The real answer at catcher might be waiting in the wings at Triple-A. Joe Mack is the organization’s fourth-ranked prospect according to MLB.com. FanGraphs ranked Mack third among Miami prospects in their midseason update. Mack was a first-round pick in 2021. He’s put up strong offensive numbers at each minor league stop, including a 129 wRC+ in 112 games at Double-A in 2024. Mack torched Double-A pitching once again to begin 2025 and was quickly bumped to Triple-A. He hit 18 home runs with a solid .250/.320/.459 slash line in 412 plate appearances with the Jacksonville Jumbo Shrimp. The 22-year-old has an elite arm, which will provide some much-needed help in slowing down the run game. Mack has a shot to break camp with the team in 2026 after hitting .298/.382/.766 with six homers in 14 games in September.

Whether or not Mack is with the big-league club next season, the team could use a glove-first veteran option. Victor Caratini, Austin Hedges, and James McCann would be viable options that shouldn’t be overly expensive. Old friend Jacob Stallings could also be a candidate to soak up innings behind the plate for a low investment. Ironically, Nick Fortes would’ve fit the bill as a veteran caddy to Mack. Fortes led the Marlins in starts behind the plate in 2023 and 2024, but was shipped out at the trade deadline this past season.

Marlins Sign Comp Balance Round Pick Joe Mack

The Marlins have signed catcher Joe Mack for a $2.5MM bonus, MLB Pipeline’s Jim Callis reports (via Twitter).  It is a slight overslot deal for Mack, as the 31st pick in the draft — and the first pick of Competitive Balance Round A — has an assigned slot price of $2.312MM.

A product of Williamsville East High School in western New York state, Mack has a 60-grade throwing arm, and MLB Pipeline’s scouting report figures “he’ll be at least a solid average receiver” with a little more development behind the plate.  Mack’s left-handed bat has a lot of power potential, though there is some debate on that topic amongst scouts.  As Baseball America’s report puts it, “those highest on Mack see an advanced hitter with good bat speed and a chance to hit for plus power in his prime, though others see more of a hit-first offensive profile with average power.”

Miami went heavy on four-year college players in its draft class, as Mack as one of only three high schoolers selected within the Marlins’ first 11 picks.  The tactic allowed the Marlins to save some money on those college signings, thus creating more pool space for overslot deals for Mack and third-rounder Jordan McCants.  Miami’s first-round pick, Kahlil Watson, could possibly be looking for a bonus significantly above the $3,745,500 assigned to the 16th overall selection considering that Watson was seen as a top-five choice heading into draft night.

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