Diamondbacks Sign Casey Kelly To Minor League Deal
The Diamondbacks have signed right-hander Casey Kelly to a minor league deal, according to the transactions log on Kelly’s MLB.com profile page.
Kelly, 35, was a first-round pick by the Red Sox back in 2008. He quickly rose to minor league stardom, becoming a consensus top-100 prospect in the sport before he was traded to the Padres alongside future All-Star Anthony Rizzo in exchange for Adrian Gonzalez. Kelly made his big league debut with San Diego just a year later, though he struggled to a 6.21 ERA in 29 innings of work across six starts in that first big league cup of coffee. Tommy John surgery in 2013 forced him to stay away from the big league mound for quite some time after that, however, and upon his return in 2015 he was torched to the tune of a 7.94 ERA in 11 1/3 innings of work that brought the Padres chapter of his career to a disappointing end.
Kelly bounced through the Braves, Cubs, and Giants organizations over the next couple of seasons, even getting a brief look in the majors with Atlanta during the 2016 season, but it wasn’t until the 2018 campaign in San Francisco that the right-hander found success in the majors. That success was fairly limited, as Kelly pitched just 23 2/3 frames at the highest level that year, but his 3.04 ERA was the first above-average showing in the majors of his career. It even earned him some attention on the other side of the world, as Kelly went on to depart the Giants organization in favor of joining the Korea Baseball Organization’s LG Twins.
Kelly’s stint in Korea ultimately lasted six seasons, and saw him put together an impressive overseas career. The right-hander pitched to a 3.25 ERA overall in 989 1/3 innings of work for the LG Twins in parts of six seasons from 2019 to 2024. Those first four seasons were particularly impressive, as Kelly made at least 27 starts in each of them with ERAs ranging from 2.54 to 3.32 and solid peripheral numbers to match. Unfortunately, Kelly started to show signs of decline in 2023 that brought about the end of his KBO career in 2024 after he struggled to a 4.51 ERA in 19 starts for the LG Twins that led the club to cut him from the team in July of last year.
After being cut loose in Korea, Kelly made his way back into stateside ball with the Reds on a minor league deal. He managed to get called up to the majors for a brief stint down the stretch last year, his first stint in the majors in more than half a decade. He pitched just 5 1/3 innings for the Reds last year, surrendering three runs on three hits (one homer) and a walk while striking out four. The right-hander was then outrighted to Triple-A Louisville in August and elected minor league free agency back in October. Now, Kelly appears likely to serve as non-roster depth for the Diamondbacks headed into 2025. He’s got plenty of competition on the club’s pitching depth chart, with Jordan Montgomery, Ryne Nelson, and Tommy Henry among the pitchers just on the 40-man roster who could vie for a long relief role with the club this season.
Blaze Alexander To Miss Several Weeks Due To Oblique Strain
Diamondbacks manager Torey Lovullo tells Alex Weiner of Arizona Sports that infielder Blaze Alexander has a right oblique strain. A firm timeline wasn’t provided but the skipper said Alexander’s absence will be measured in weeks rather than days. With Opening Day now less than a month away, a season-opening trip to the injured list seems distinctly possible. Even if he’s healthy prior to the opener, he’ll need to get some reps and effectively redo spring training to get into game shape.
Alexander, 26, projected as the club’s likely bench infielder before this injury. He got into 61 games for the Snakes last year, his first major league action, stepping to the plate 185 times. His .247/.321/.343 batting line led to a wRC+ of 88. That indicates he was 12% below league average overall but that’s not awful for a guy who can play multiple positions off the bench. Alexander logged at least 53 innings at shortstop, second base and third base last year.
The Diamondbacks have everyday regulars at those spots, with Geraldo Perdomo at short, Ketel Marte at second and Eugenio Suárez at third. Alexander can give the club cover at those three spots when healthy but they will have to find another option if he has to start the season on the injured list.
On the 40-man roster, the Diamondbacks do have some other infield options. Jordan Lawlar is the most notable, but he is one of the top prospects in the league and only played 23 minor league games last year due to injuries. Presumably, the Diamondbacks would prefer to have him playing every day in the minors and getting back in form after a mostly lost season. It’s possible he plays his way into the third base job and pushes Suárez into the designated hitter slot, though the Diamondbacks might also want Pavin Smith to get at-bats there.
Grae Kessinger and Tim Tawa are also on the roster, though Tawa has very little shortstop experience in the minors, making him an imperfect fit as the club’s primary bench infielder. Kessinger has played all over the field but has hit just .131/.243/.213 in his big league career thus far. His minor league offense has been better but still subpar. His .234/.332/.372 batting line on the farm over the past four years leads to an 83 wRC+.
The free agent market features guys like Jose Iglesias and Joey Wendle, though the Snakes likely won’t be compelled to make a move if Alexander is going to return fairly early in the season. Other infielders will surely become available as Opening Day nears and all clubs make their final roster cuts, so perhaps the Snakes will keep a lookout for veterans opting out of minor league deals or fringe players hitting the waiver wire.
Thyago Vieira, Josh Winder To Undergo Tommy John Surgery
Diamondbacks manager Torey Lovullo revealed today that right-handers Thyago Vieira and Josh Winder will both require Tommy John surgery, per Mark Feinsand of MLB.com. Both righties had been in camp as non-roster invitees but each will now miss the entire 2025 season.
Vieira, 32, was claimed off waivers from the Orioles in June. The following month, the Snakes put him back on waivers and passed him through unclaimed. He was invited to big league camp and could have earned his way back into the majors. However, that clearly won’t come to pass now.
The righty debuted in the majors back in 2017. He pitched in Japan from 2020 to 2022 but was in each major league season around that. He has 66 2/3 big league innings pitched in the majors between the Mariners, White Sox, Brewers, Orioles and Diamondbacks. He has a 5.81 earned run average, 20.8% strikeout rate and 13.1% walk rate. He’ll turn 33 in January of 2026 as he approaches the one-year anniversary of this surgery.
Winder, 28, was a promising prospect not too long ago but injuries have derailed him in recent years. In 2021, he posted a 2.63 ERA across 14 minor league starts. Baseball America ranked him the #6 prospect in Minnesota’s system going into 2022.
Despite the solid results, shoulder issues cropped up in 2021 which impacted him for the next few years. He spent time on the minor league injured list due to shoulder injuries in each season from 2021 to 2023. Last year, he was on the major league IL for the first couple of months of the campaign due to a scapular stress fracture.
Around those shoulder issues, Winder tossed 110 2/3 major league innings from 2022 through 2024, posting a 4.39 ERA with an 18% strikeout rate and 7% walk rate. But he was mostly kept in the minors after getting healthy last year and had a 6.15 ERA at the Triple-A level, pitching mostly in relief. The Twins outrighted him off the roster at season’s end.
He elected free agency and signed a minor league deal with the Diamondbacks, presumably hoping for a fresh start with a new club. Instead, he’ll have to spend the rest of the year rehabbing with an eye on returning at some point in 2026. He’ll celebrate his 29th birthday this coming October. Since neither Winder nor Vieira had a 40-man roster spot, they won’t collect service time for the upcoming season.
For the Snakes, they have a strong relief group overall, something that MLBTR’s Steve Adams recently took a detailed look at. These injuries will deprive them of some non-roster depth, though there are still many unsigned pitchers who could be brought aboard as reinforcements. As Opening Day nears, other guys will also shake loose as clubs make their final camp cuts.
The D-backs’ Closing Competition
The Diamondbacks entered the offseason in search of a new first baseman, a closer and some right-handed thump in the lineup, among other items on the to-do list. They’ve broadly succeeded, acquiring Josh Naylor from the Guardians to replace free agent Christian Walker and re-signing Randal Grichuk. The Snakes haven’t found a slam-dunk closer, but they signed a new (co) ace, shocking the industry with their signing of Corbin Burnes for six years and $210MM.
While there’s still one marquee free agent reliever on the market — David Robertson has yet to sign — it appears increasingly likely that the Diamondbacks will largely go with the arms who are already in camp as they look to sort out the ninth inning. Arizona’s payroll is already projected for a franchise-record $195MM. That’s a new highwater mark by a measure of nearly $30MM. We can always adopt the “never say never” mentality as long as there are a few viable closing options on the free agent and trade markets, but the D-backs may already have their closer in house. At present, A.J. Puk and Justin Martinez appear to be the front-runners.
Puk, acquired at the deadline from the Marlins in exchange for young slugger Deyvison De Los Santos and outfielder Andrew Pintar, enjoyed a quietly dominant season in 2024. His cumulative 3.15 ERA looks more good than great, but it’s skewed by a failed experiment wherein the Marlins tried to stretch him back out as a starter early in the season. Puk was clobbered for 17 runs in 13 2/3 innings. He moved back to the bullpen, and from that point forth was arguably the best reliever in the sport.
After giving up 17 earned runs in his four starts, Puk only allowed 11 more earned runs for the entire season. He posted a 1.72 ERA out of the bullpen in 2024, fanning a colossal 35% of his opponents against a terrific 5.1% walk rate. Opponents averaged only 86.6 mph off the bat against him in that time with a middling 32.6% hard-hit rate. Per Statcast, only five of his opponents’ batted balls in that time were barreled. Puk allowed a run in his second appearance with the D-backs and then went on a run for the ages, rattling off 23 2/3 scoreless innings with a 38-to-4 K/BB ratio. He punched out 44.7% of opponents in that career-best run.
Martinez was nearly as dominant for the early portion of the 2024 season. The young flamethrower posted a 1.60 ERA with a 27.5% strikeout rate and mammoth 64.5% grounder rate in his first 50 innings of work. His exit velocity and hard-hit rate were nearly identical to Puk’s marks as a reliever. An 11.5% walk rate was in clear need of improvement, but for a 22-year-old who averaged better than 100 mph on both his four-seamer and sinker, it’s hard to draw up a more promising start.
That run of dominance didn’t last the full season, however. While Martinez remained a solid reliever, his 3.90 ERA over the final 27 2/3 innings of his season was far less eye-catching. The young righty’s strikeout rate actually ticked up during that span, perhaps due to roughly doubling the usage of his four-seamer at the expense of his sinker, but his grounder rate fell sharply. There was surely some poor fortune in play, as Martinez was hampered by a .388 BABIP during this stretch despite continuing to limit hard contact (and allowing only one home run).
Whether in the ninth inning or working in a setup capacity, both Puk and Martinez will be in high-leverage roles this season. They were two of the D-backs’ top five arms in terms of their average leverage index — but not the top two. Paul Sewald‘s departure in free agency subtracted one of Arizona’s top leverage arms, but it was actually righty Ryan Thompson who found himself most frequently in high-leverage spots, followed by Martinez and then by fellow righty Kevin Ginkel.
The 32-year-old Thompson isn’t the prototypical power arm often associated with pressure-packed, late-inning situations. He’s a sidearming righty who averages just 91 mph on his sinker and 92.5 mph on his lesser-used four-seamer. Thompson’s 19.1% strikeout rate was well below the 23.4% league average among relievers. However, he boasts a 61% grounder rate, rarely issues walks (5.5%) and posted nearly identical results versus righties (.254/.299/.377) and lefties (.254/.293/.377). He picked up two saves and 24 holds.
Ginkel, 30, has quietly emerged as a key arm in Phoenix. He was never a top prospect and didn’t truly establish himself as a reliable reliever until his age-28 season, in 2022. Over the past three seasons, he’s tossed 164 2/3 innings with a 2.95 ERA. It’s not necessarily flashy, as Ginkel is more good-than-great in terms of strikeout rate (26.5%), walk rate (7.3%), swinging-strike rate (12.5%), ground-ball rate (47.1%) and fastball velocity (96 mph average) in that time. Even with the lack of one standout area in which he truly excels, his above-average rates across the board have made him a consistent and reliable late-inning option for manager Torey Lovullo.
Also entering the mix is 34-year-old Kendall Graveman, who signed a one-year, $1.35MM deal after missing the 2024 season due to shoulder surgery. With 24 saves and 56 holds from 2020-23, Graveman is no stranger to late-inning work. After moving to the bullpen in Sept. 2020 with the Mariners, Graveman rattled off 197 1/3 innings with a 2.78 ERA, 24% strikeout rate, 10.3% walk rate and 49.2% grounder rate. At his best, Graveman averaged better than 96 mph on his heater and offered a Ginkel-esque blend of above-average strikeout, walk and ground-ball rates while sitting around 96 mph with his main offering. Whether he can return to that form in the wake of last year’s shoulder surgery is an open question.
However it shakes out, the Snakes look to have a solid quintet of arms rounding out the late-inning group at Chase Field. Lefty Joe Mantiply offers a solid middle-inning complement who has picked up around 12 holds per year over the past four seasons. A starter who doesn’t make the rotation (e.g. Jordan Montgomery, Ryne Nelson) could hold down another spot. Bryce Jarvis, Kyle Nelson and non-roster candidates like Shelby Miller, Scott McGough, John Curtiss and Josh Winder (among others) will vie for what’s likely one open spot.
There’s enough left on both the trade and free agent markets that it’s not impossible to envision a change still impacting Lovullo’s bullpen composition. Signing Robertson might be too pricey, likely pushing the D-backs into $200MM+ payroll territory for the first time, but if GM Mike Hazen ultimately finds a trade partner for Montgomery, any savings could make Robertson feel likelier. The Padres have been open to offers on Robert Suarez. Trading within the division probably isn’t either team’s first choice, though. A Ryan Helsley trade before next offseason feels virtually inevitable but also seems likelier to happen in-season at this point.
In any bullpen, there’s almost always room for one more addition. But, if this is the group the D-backs take into the season, they can still feel good about an impressive breadth of experienced late-inning arms who have the makings of a strong overall unit.
Salary Details For Several Minor League Deals
Every offseason, the primary focus for baseball fans is on trades and free agent activity. Naturally, major league free agent signings garner the majority of the attention and generate the most buzz. Minor league signees come with less fanfare, typically with good reason. They tend to be older veterans who are looking to extend their playing careers or perhaps younger names looking to rebound from an injury or a disappointing showing the prior season (sometimes the prior few seasons).
As spring training progresses, we’re seeing an uptick in minor league signings. Free agents who’ve lingered on the market and felt their leverage in negotiations dry up begin to concede and accept non-guaranteed pacts to get to camp in hopes of winning a roster spot.
Salary details for minor league signees isn’t as prominently reported on as it is for players signing guaranteed big league deals. The Associated Press just published a list of free agent signings throughout the winter, including within salary details for a handful of (mostly) recent minor league signings. Many of the salaries reported by the AP were already known and reflected here at MLBTR, but the report does include more than two dozen previously unreported base salaries for players on minor league deals. Here’s a quick rundown (player salary links point back to prior MLBTR posts detailing that minor league signing):
Blue Jays: Jacob Barnes, RHP, $1.4MM | Ryan Yarbrough, LHP, $2MM
Braves: Curt Casali, C, $1.25MM | Buck Farmer, RHP, $1MM
Brewers: Manuel Margot, OF, $1.3MM | Mark Canha, 1B/OF, $1.4MM
Cubs: Brooks Kriske, RHP, $900K | Travis Jankowski, OF, $1.25MM | Chris Flexen, RHP, $1.5MM
Diamondbacks: Garrett Hampson, INF/OF, $1.5MM | Scott McGough, RHP, $1.25MM
Dodgers: Luis Garcia, RHP, $1.5MM
Giants: Lou Trivino, RHP, $1.5MM
Mariners: Shintaro Fujinami, RHP, $1.3MM | Trevor Gott, RHP, $1.35MM
Padres: Yuli Gurriel, 1B, $1.35MM ($100K higher than initially reported)
Rangers: Nick Ahmed, SS, $1.25MM | Jesse Chavez, RHP, $1.25MM | David Buchanan, RHP, $1.375MM | Kevin Pillar, OF, $1MM
Red Sox: Matt Moore, LHP, $2MM
Royals: Luke Maile, C, $2MM | Ross Stripling, RHP, $1.75MM
White Sox: Brandon Drury, INF/OF, $2MM | Mike Clevinger, RHP, $1.5MM
A few things bear emphasizing. First, this is clearly not a comprehensive list of minor league signings throughout the league — nor is it even a comprehensive list of the listed teams’ non-roster invitees to camp. Secondly, many of these sums are of little consequence to the team. They’re not even guaranteed, after all, and even if a player makes the Opening Day roster and earns the full slate of his minor league salary, most of these salaries aren’t going to carry significant payroll ramifications.
That’s not true across the board, though. For instance, the Rangers are fully intent on remaining under the $241MM luxury tax threshold. At present, RosterResource projects them at $235.7MM of luxury obligations. Opting to select the contract of Buchanan or Chavez rather than allocating those innings to pre-arbitration players who’s being paid at league-minimum levels (or a few thousand dollars north of it) would inch the Rangers’ CBT number forward. They’re not going to hit the tax line even in if they wind up adding multiple NRIs to the actual roster, but selecting their contracts will further narrow the resources president of baseball ops Chris Young will have at his disposal for midseason dealings.
The Red Sox, meanwhile, are effectively seated right at the tax threshold. RosterResource has them with $241.4MM of luxury considerations. Team president Sam Kennedy said after signing Alex Bregman that he expects his team will be a CBT payor in 2025. As things stand, the Sox could duck back under that threshold, but selecting the contract of Moore, Adam Ottavino (also $2MM) or another prominent NRI would further signal ownership’s willingness to return to luxury tax status for the first time since 2022.
There’s probably no getting back under the tax line for the Blue Jays, who currently have a $273.3MM CBT number. However, the front office would presumably like to avoid reaching $281MM in tax obligations, as that’s the point at which Toronto’s top pick in the 2026 draft would be dropped by ten spots. In-season trades will have more of an effect on their tax number than decisions on NRIs like Barnes, Yarbrough, Eric Lauer and others, but it bears mentioning that the Blue Jays are around $8MM shy of what many clubs consider to be the most detrimental impact of straying to deep into CBT waters.
D-Backs, Brandon Bielak Agree To Minor League Deal
The Diamondbacks are in agreement with Brandon Bielak on a minor league contract, reports Ari Alexander of KPRC 2. Bielak elected minor league free agency after being waived by the A’s late last fall.
Bielak has pitched in parts of five MLB seasons as a swingman. He spent the first four-plus years with the Astros, a tenure highlighted by his 3.83 ERA across a career-high 80 innings in 2023. Houston carried the out-of-options righty in their bullpen early last year. He struggled to a 5.71 ERA in 10 appearances, leading the Astros to designate him for assignment. They dealt him to the A’s in a cash trade a few days later.
The A’s only kept Bielak on their roster for nine days. They designated him for assignment themselves and ran him through outright waivers. He stuck with the club in Triple-A, where he allowed over six earned runs per nine in 66 2/3 innings. The A’s brought him back up for a couple weeks in September. He concluded the year with a 5.16 ERA with a well below-average 16.4% strikeout percentage over 29 2/3 MLB frames.
Bielak hasn’t missed many bats in the majors. He has an average 22.5% strikeout rate with a 4.42 ERA in parts of five Triple-A campaigns. He’s versatile enough to work as rotation or long relief depth. Arizona’s rotation is deep, so Bielak’s better path to a roster spot is in the bullpen. Barring a late-offseason trade, Jordan Montgomery is likely to begin the year as the long man for skipper Torey Lovullo.
Marlins Claim Seth Martinez
The Marlins announced that they have claimed right-hander Seth Martinez off waivers from the Diamondbacks. The latter club had designated him for assignment earlier this week. To open a roster spot, the Marlins transferred right-hander Eury Pérez to the 60-day injured list. Pérez is recovering from Tommy John surgery and isn’t expected back until around the All-Star break.
It’s the second waiver claim of the offseason for the 30-year-old Martinez. The Astros put him on waivers at the start of November, just as the offseason was getting going. The Snakes claimed him and kept him for a few months, but he got nudged off their roster when they signed Kendall Graveman a few days ago.
His entire big league track record has been with the Astros thus far. That club added him to their roster late in 2021. He got a cup-of-coffee MLB debut that year, then spent the past three seasons as an up-and-down depth arm for Houston. From his initial selection to the 40-man until being put on waivers, the Astros optioned him 12 times.
In between those trips to Sugar Land, he threw 137 1/3 major league innings for the Astros, allowing 3.93 earned runs per nine. He struck out 20.7% of opponents and gave out walks 9.2% of the time, marks just a bit worse than league average.
His minor league numbers have been a bit more intriguing. He logged 105 innings on the farm over the past four years with a 2.66 ERA. His 10% walk rate in that sample was still a tad high but he paired it with a strong 31.5% strikeout rate.
However, he exhausted his final option year in 2024, meaning he could no longer be freely shuttled to Triple-A and back. That’s why he has twice been put on waivers in the past few months and why he has been claimed today.
The Astros and Diamondbacks are clubs with competitive aspirations, so keeping Martinez in a big league spot would be a bit more tricky. The Marlins should find it far easier, however. As part of their rebuild, they have aggressively sent out players with big league experience, with the bullpen being no exception. Tanner Scott, A.J. Puk, Bryan Hoeing, Huascar Brazobán and JT Chargois were traded at last year’s deadline. Anthony Bender is now the only reliever on the roster with even three years of big league experience.
Before this move, Andrew Nardi was the only other guy over the two-year service mark, but Martinez now joins him in that camp. Though he’s out of options, Martinez could hang onto a spot in Miami’s bullpen if he’s pitching semi-effectively, given the lack of proven options. Most of the other guys in the relief mix are optionable. He should get a chance to post numbers more in line with his minor league track record. If he holds a spot all season, he can theoretically be retained via arbitration through 2028.
MLBTR Podcast: Alex Bregman, The Padres Add Players, And No Extension For Vlad Jr.
The latest episode of the MLB Trade Rumors Podcast is now live on Spotify, Apple 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…
- The Red Sox signing Alex Bregman (1:15)
- The Tigers just missing on Bregman (9:35)
- The Cardinals seemingly holding onto Nolan Arenado (12:15)
- The Padres signing Nick Pivetta and Kyle Hart (17:40)
- The Blue Jays not getting an extension done with Vladimir Guerrero Jr. (20:50)
- The Diamondbacks extending Geraldo Perdomo (31:30)
Plus, we answer your questions, including…
- The Twins had a quiet offseason but projection systems have them winning the division. Are they the best team in the AL Central? (38:25)
- Why did the Giants have a quiet offseason apart from Willy Adames and Justin Verlander? Was it ownership reluctance or Buster Posey’s conservative stance? (42:25)
Check out our past episodes!
- Pete Alonso’s Deal, And Potential Landing Spots For Bregman and Arenado – listen here
- Jack Flaherty Back To Detroit, Max Scherzer, And What’s Next For The Padres – listen here
- Ryan Pressly To The Cubs, Bregman’s Future, And Jurickson Profar – listen here
The podcast intro and outro song “So Long” is provided courtesy of the band Showoff. Check out their Facebook page here!
D-Backs, Geraldo Perdomo Agree To Four-Year Extension
February 18: The Diamondbacks have officially announced Perdomo’s extension. The shortstop will address the media today, along with general manager Mike Hazen.
February 17: The Diamondbacks have reportedly reached agreement with shortstop Geraldo Perdomo on a four-year extension that’ll cover the 2026-29 seasons. There’s also a fifth-year club option. Perdomo, a client of Republik Sports, is guaranteed $45MM. The deal buys out his final two arbitration seasons and at least two would-be free agent years, with the option covering a third free agent season.
Perdomo has a little over three years of major league service. He’d already agreed to a $2.55MM salary to cover his first season of arbitration. That is unchanged. He’ll collect a $5MM signing bonus and will earn $5MM in 2026, $8MM in ’27, $11MM in ’28, and $13MM in ’29. The option is valued at $15MM and comes with a $3MM buyout. His 2028-30 salaries could escalate if he finishes in the top 10 in MVP balloting. Perdomo had been on track to hit free agency in advance of his age-28 season. If the D-Backs exercise their option, he’d get to the market at age 31.
The switch-hitting Perdomo has established himself as Arizona’s shortstop behind a solid glove and strong plate approach. He debuted in 2021 but didn’t get a real opportunity until the following season. He provided very little offensively as a rookie, but he has been a league average hitter over the last two years.
Perdomo had an excellent first half in 2023. He earned an All-Star nod behind a .271/.378/.408 showing. The offense cratered coming out of the All-Star Break, as he managed only a .214/.322/.297 line in the second half. Nevertheless, manager Torey Lovullo declared early in last year’s Spring Training that he remained committed to Perdomo as the everyday shortstop.
Last season got off to a rough start. The middle infielder suffered a meniscus tear in his right knee within the first two weeks of the season. He underwent surgery that shelved him until early June. Perdomo played well upon returning, hitting .274/.345/.380 with 20 doubles and a pair of homers across 361 plate appearances. He carries a .258/.349/.366 slash in nearly 900 trips to the plate over the last two seasons.
Perdomo has a throwback offensive approach. He has drawn walks at a strong 11.3% clip while keeping his strikeout rate to a modest 16.3% since the start of 2023. He has 41 doubles and six triples with only nine home runs over that stretch. He ranks near the bottom of the league in hard contact rate and average exit velocity, but he rarely chases stuff off the plate or gets beat within the strike zone. Only Luis Arraez and Steven Kwan have a lower swinging strike rate among hitters with at least 500 plate appearances over the last two seasons.
The small-ball game even extends to bunting. Perdomo led the majors in sacrifices in both 2022 and ’23. He finished tied for sixth in that category last year despite the injury absence. While he doesn’t have great top-line speed, Perdomo has been an efficient basestealer and rates as a solid overall baserunner.
Public metrics have painted a varying picture of the defense. Statcast has graded him as a league average shortstop in each of his three full seasons. Reviews from Defensive Runs Saved have bounced around. DRS had Perdomo a few runs below average in both 2022 and ’23 but credited him at +10 runs last year, which tied for fifth-best at the position.
Arizona likes Perdomo’s game enough to commit to him at shortstop despite the presence of top infield prospect Jordan Lawlar. The 22-year-old ranks as Arizona’s best prospect and in the top 15 overall on Baseball America’s Top 100 list. Lawlar had a cup of coffee late in the ’23 season and would likely have gotten his first significant MLB opportunity last year had he not gotten injured. He’s likely to open this year in Triple-A but should be a factor at some point midseason. His long-term future is probably at third base with Eugenio Suárez hitting free agency next offseason. The Diamondbacks have Perdomo and Ketel Marte signed for multiple years beyond this one.
The D-Backs have pushed payroll to franchise-record heights this offseason. They’re going into the season with a player payroll north of $195MM, according to RosterResource. That’s well ahead of last year’s $163MM Opening Day mark, which was itself an organizational high. They have nearly $90MM coming off the books next winter. Suárez, Jordan Montgomery, Zac Gallen, Merrill Kelly and Josh Naylor are all hitting free agency. They’ll have a lot of work to do, especially on the pitching staff, but there’s enough future flexibility to make an extended commitment to Perdomo.
Mike Rodriguez first reported that the D-Backs were signing Perdomo to an extension. ESPN’s Jeff Passan had the four-year, $45MM guarantee beginning in 2026 with the fifth-year option. Mark Feinsand of MLB.com was first to report that the option could push the contract to $57MM, while escalators could add another $15MM. Nick Piecoro of the Arizona Republic had the full salary breakdown, while Jon Heyman of The New York Post reported the MVP bonuses.
Image courtesy of Imagn.
Diamondbacks Designate Seth Martinez For Assignment
The Diamondbacks announced that right-hander Seth Martinez has been designated for assignment. That’s the corresponding move for their signing of fellow righty Kendall Graveman, which is now official.
Martinez, 30, has never suited up for the Snakes. He was just claimed off waivers from the Astros in November, shortly after the World Series. He lasted on the roster through most of the winter but has been nudged off today.
All of his major league experience has been with Houston thus far. He was added to that club’s roster late in 2021 and spent several years as a fringe member of the bullpen, getting optioned to the minors 12 times since getting that roster spot.
Around those trips on the shuttle, he tossed 137 1/3 major league innings for the Astros, allowing 3.93 earned runs per nine. His 20.7% strikeout rate, 9.2% walk rate and 39.6% ground ball rate to this point are all close to average but a bit worse than the mean. He also tossed 105 minor league innings over the past four years with more intriguing numbers. He had a 2.66 ERA in that work, along with a 31.5% strikeout rate and 10% walk rate.
He exhausted his final option year in 2024, which means he’ll be less valuable from a roster flexibility standpoint going forward. That likely played a role in the Astros bumping him off their roster. The Diamondbacks were presumably intrigued enough by his minor league strikeouts to claim him and hang onto him for a while but he’s been squeezed off a roster yet again.
Martinez will now be in DFA limbo for a maximum of seven days. He will likely be put back on waivers, which is a 48-hour process, so the Diamondbacks could explore trade interest for the next five days. If any club acquired Martinez, he has a bit more than two years of service time, meaning he still hasn’t qualified for arbitration and can be theoretically controlled for four seasons. However, his aforementioned out-of-options status will give him a bit of a challenge in sticking somewhere.