Red Sox Select Eduardo Rivera
April 22: The Sox have made it official today, announcing they selected Rivera, optioned Anderson and put Casas on the 60-day IL. Chris Cotillo of MassLive confirmed the Casas move prior to the official announcement.
April 21: The Red Sox are promoting left-hander Eduardo Rivera, as first reported by Javier Sabath. The Sox will option righty Jack Anderson to Triple-A Worcester, according to Ari Alexander of Boston 7 News. They’ll also need to open a spot on the 40-man roster. Triston Casas stands as a 60-day injured list candidate after suffering an intercostal strain on top of his work back from knee surgery.
Rivera makes the jump directly from Double-A Portland. The 22-year-old southpaw dominated over his first two starts of the season. He recorded 16 strikeouts against three walks over 10 innings of one-run ball. Rivera also missed bats for his native Puerto Rico during the World Baseball Classic. He fanned nine hitters over 6 2/3 frames in two WBC games. Rivera allowed three runs on two hits, four walks, and a hit batter.
Listed at 6’7″ and 237 pounds, Rivera cuts an imposing figure on the mound. The long limbs have also contributed to strike-throwing issues in his minor league career. Rivera was an 11th-round selection by the Athletics in 2021. He never advanced out of A-ball in their system and was released in May ’24.
The Red Sox took a flier on his size and a fastball that runs into the mid-90s. They’ve been rewarded for the pickup, as Rivera has pitched well since joining the Boston organization. He combined for a 2.48 ERA while striking out 29.7% of batters faced over 87 innings between High-A and Double-A last season. That came with a near-13% walk rate, but Rivera has been around the strike zone over his first couple appearances this year.
Rivera did not crack Baseball America’s Top 30 prospects. However, MLB Pipeline slotted him #26 in the system with praise for his fastball-slider combination. Rivera probably projects to a bullpen role but is stretched out enough to work multiple innings.
The Red Sox used seven relievers to get through Monday’s game. Their leverage arms got a rest today, as the duo of Anderson and Tyler Samaniego finished the 4-0 loss to the Yankees. Rivera will replace Anderson as a potential mop-up arm. They’re carrying a ninth reliever for the next couple days after placing Sonny Gray on the injured list but will need to drop back to an eight-man bullpen to call up a starter (most likely Payton Tolle) this weekend.
Phillies To Place J.T. Realmuto On Injured List
The Phillies are going to place catcher J.T. Realmuto on the 10-day injured list due to a lower back injury, reports Matt Gelb of The Athletic. Fellow catcher Garrett Stubbs will be selected to take Realmuto’s place on the active roster. A corresponding move will be required to open a 40-man spot for Stubbs.
More to come.
Padres Sign Lucas Giolito
Lucas Giolito‘s protracted 2025-2026 free agency stint has finally ended after signing with the Padres. Per Jon Heyman of the New York Post, Giolito has a $3MM base salary, while Robert Murray of FanSided was the first to report contract escalators up to $8MM. To make room on the 40-man, the Padres announced that righty Bryan Hoeing has been transferred to the 60-day IL. Kevin Acee of the San Diego Union-Tribune reports that Giolito will start with Single-A Lake Elsinore and must be on the Major League roster within the next 25 days. Giolito is represented by CAA Sports.
For Giolito, his second foray into free agency was not nearly as successful as his first. After signing a two-year deal with the Red Sox in the ’23-’24 offseason, Giolito underwent Tommy John early in 2024. He returned to throw 145 innings in 2025, but ERA evaluators like SIERA (4.65) were more bearish on his work than his actual results (3.41). Notably, Giolito’s strikeouts were down from his heyday with the White Sox; he profiled more as a back-of-the-rotation starter than the ace-like upside he flashed from ’19-’21 with Chicago. Despite a solid return to the rotation, Giolito suffered from flexor irritation and a bone issue at the conclusion of the 2025 season; while he was set to return to the club after a short rest, the Red Sox’s early postseason exit meant Giolito had no chance to pitch again before free agency.
Giolito passed on his end of a $19MM mutual option (essentially a formality) with the Red Sox for 2026, and it perhaps came as no surprise that the Red Sox passed on extending Giolito a qualifying offer after the 2025 season due to some lingering injury trepidation. Even without draft pick compensation attached, Giolito has lingered on the free agent market well into April, despite some notable playoff aspirants like the Braves, Cubs, and Padres losing starters in Spring Training and the early season.
For the Padres, the news couldn’t come at a better time. With Yu Darvish out all of 2026 rehabbing, Joe Musgrove backed off his buildup from his Tommy John rehab, and Nick Pivetta resting an elbow strain, the San Diego rotation has precious little depth. Back-of-the-rotation arms like German Marquez, Walker Buehler, and Matt Waldron have offered mixed results. Notably, only seven of the teams’ first twenty-three games have had a starter pitch into the fifth inning, forcing first-year manager Craig Stammen to get creative with his bullpen. While Griffin Canning is on the horizon while working through a Triple-A El Paso rehab, Giolito should (at the very least) bolster the back-end of the Padres’ rotation while they wait for their frontline reinforcements to arrive.
More to come.
Braves Recall Didier Fuentes, Designate Ian Hamilton For Assignment
The Braves announced Wednesday morning that they’ve recalled right-hander Didier Fuentes from Triple-A Gwinnett. Fellow righty Ian Hamilton was designated for assignment to open a spot on the active roster. Fuentes will start tonight’s game against the Nationals.
Hamilton’s contract was just selected to the big league roster last week. He made only one appearance with Atlanta and was tagged for three runs in an inning of work. He’ll now be traded or placed on waivers within the next five days.
With his latest appearance, the 30-year-old Hamilton has now pitched 151 1/3 major league innings between the White Sox, Twins, Yankees and Braves. He’s worked to a solid 3.75 ERA overall, although a terrific 2023 season (2.64 ERA, 58 innings) disproportionately affects that career-long mark; Hamilton had a 4.91 ERA in 14 2/3 innings prior to that season and has a 4.35 earned run average in 78 2/3 frames since.
Hamilton has fanned just over one quarter of his major league opponents (25.4%) but also carries a bloated 11.3% walk rate that’s nearly three percentage points north of the league average. He’s shown above-average grounder tendencies (45.9%) and has done a nice job of avoiding homers and hard contact in general. The right-hander sat 96 mph with his heater for the 2024-25 Yankees but averaged 94.4 mph in his lone Braves appearance. His sinker velocity dipped similarly. Hamilton’s primary breaking pitch is a slider that he’s typically thrown at a near 50% clip.
Fuentes, 10 years younger than Hamilton, won’t turn 21 until mid-June. Despite that youth, he’s auditioning for a role in the Atlanta rotation. The right-hander struggled in a four-start cup of coffee last summer but had a big spring showing and has been excellent in Gwinnett thus far. Through his first 16 2/3 frames, Fuentes sports a tidy 2.16 ERA with a 31.7% strikeout rate and a 9.5% walk rate. He made one long relief appearance with the Braves early this season before being sent down and shined there as well, holding the Royals to a run on two hits and a walk with four punchouts in four innings.
Atlanta’s pitching injuries have been chronicled at length. Spencer Schwellenbach and Hurston Waldrep had surgery to remove loose bodies from their elbows before the season started. Joey Wentz tore his ACL during spring training. Spencer Strider opened the season on the injured list due to an oblique strain and has yet to return.
The Braves have been left with a group of Chris Sale, Reynaldo López, Grant Holmes, Bryce Elder and Martín Pérez to shoulder the rotation load thus far. To call Elder (1.50 ERA in 30 innings) and Pérez (2.21 ERA, 20 1/3 innings) “pleasant surprises” thus far would be an understatement. Pérez has pitched like a fifth starter when healthy for the bulk of the past five seasons. Elder was one of the least-effective pitchers in baseball in 2024-25.
It’s not reasonable to expect either Elder or Pérez to sustain this level of production, but there’s no taking away what’s already in the books; these impeccably timed hot streaks have helped the Braves weather a storm of early injuries that threatened to dig them in a massive hole for a second straight season. Instead, Atlanta has an NL-best 2.98 ERA from the rotation and sits at 16-8 with a five-game cushion in a disappointing NL East division. With Strider on a minor league rehab assignment, Fuentes now in the majors, top prospect JR Ritchie performing well and injured arms like Schwellenbach, Waldrep and AJ Smith-Shawver (Tommy John surgery last year) all progressing through their rehab windows, Atlanta could be on the cusp of escaping those early health setbacks with an improbable division lead, which would set the Braves up incredibly well for the remainder of the season.
Phillies Re-Sign Pedro León To Minor League Deal
The Phillies re-signed outfielder Pedro León to a minor league contract, according to the MLB.com transaction tracker. He’s back with Triple-A Lehigh Valley but no longer occupies a 40-man roster spot.
Philadelphia released León on Saturday when they selected infielder Felix Reyes onto the roster. León had been placed on the minor league injured list with a right hamstring strain a couple weeks ago. Teams cannot place injured players on outright waivers, so the Phils released León to take him off the roster.
It’s unclear how long León will be sidelined. The Phillies evidently still like him as a depth piece but were willing to risk him signing elsewhere if needed to drop him from the 40-man. Philadelphia claimed León off waivers from Baltimore early in the offseason. He’s hitting .283 but has fanned 19 times in his first 53 plate appearances with Lehigh Valley.
León is a .253/.354/.443 hitter in just over 400 Triple-A games. His MLB experience consists of seven games for the Astros two years ago. León was once a highly-regarded amateur signee out of Cuba based on his power-speed combination. That has been undercut by strikeout issues that have made him an average Triple-A hitter.
Giants Place Daniel Susac On IL, Select Eric Haase
The Giants announced that catcher Daniel Susac has been placed on the 10-day injured list, retroactive to April 20th, due to right elbow neuritis. He’ll miss about two to three weeks, per Alex Pavlovic of NBC Sports Bay Area. Catcher Eric Haase has been selected to take his place on the active roster. To open a 40-man spot for Haase, right-hander José Buttó has been transferred to the 60-day injured list.
Susac was picked up in the Rule 5 draft, via an intermediary. The Twins took him from the Athletics and then flipped him to the Giants for minor leaguer Miguel Caraballo. The Giants had Patrick Bailey lined up as their catcher but Susac and Haase battled for the backup job.
In the end, Susac won the job and has been on a tear. He has a .478/.500/.652 line through his first 24 big league plate appearances. He wasn’t going to hit like that forever, especially with a .550 batting average on balls in play, but the Giants really needed that. Most of the rest of the lineup has been struggling, including Bailey. He is considered by many to be the best defensive catcher in the game but has never been much of a threat from the batter’s box. He has a .226/.283/.331 line in his career and is at .151/.211/.151 this year.
Susac’s strong showing and the general underperformance of the lineup, including Bailey, were seemingly leading to more playing time for Susac. That will be on pause for the next few weeks. Though Susac was due for some regression, it’s still not ideal for him to hit the IL when the club is struggling to score runs.
Haase will jump onto the roster and see if he can make up some of the slack. When Susac won the Opening Day job, Haase was granted his release but then quickly re-signed on a new minor league deal. He has appeared in nine Triple-A games this year with a .250/.300/.472 line.
His best attribute is his power. He had a 22-homer season with the Tigers back in 2021 and has 48 home runs in 1,224 career plate appearances. However, his offense is otherwise poor. His 30.7% career strikeout rate is quite high and he’s been above 40% since the start of 2024. His 6.2% career walk rate is also subpar. Despite the long balls, his career .228/.278/.396 line translates to an 85 wRC+, indicating he’s been 15% worse than the league average hitter.
That’s not necessarily disastrous for a catcher since backstops are usually about 10% below the rest of the league. For a backup catcher, the threshold of respectability is even lower. Unfortunately, Haase isn’t considered a strong defender. He has a minus-12 grade from Defensive Runs Saved in his career behind the plate. Statcast has considered him around par in terms of throwing but below average with blocking and framing.
Haase is out of options and could get squeezed back off the roster when Susac comes back. For now, he’ll try to support Bailey as the Giants try to find some momentum. They’re currently 9-13, with the Mets the only club with fewer runs scored so far. The Giants are hosting the 16-6 Dodgers for a three-game set beginning tonight.
Photo courtesy of Geoff Burke, Imagn Images
Mariners Designate Casey Legumina For Assignment
The Mariners announced that they have recalled right-hander Alex Hoppe. The righty will be making his major league debut as soon as he gets into a game. In a corresponding move, Seattle has designated righty Casey Legumina for assignment. Daniel Kramer of MLB.com reported the moves prior to the official announcement.
Hoppe, 27, was just acquired from the Red Sox in November. That was the Rule 5 protection deadline. The Sox apparently didn’t have roster space for him, so they sent him to the Mariners in exchange for minor league catcher Luke Heyman. The M’s immediately selected him to their 40-man so that he wouldn’t be available in the Rule 5.
He started the season on optional assignment at Triple-A and is out to a great start with his new organization, having thrown eight scoreless innings. Of the 30 batters he has faced, he struck out 12 of them, a 40% clip. He also induced grounders on two thirds of ball in play. He has issued three walks, a 10% pace.
That’s a small sample of size of work. Last year’s numbers were somewhat similar but not quite as impressive. He tossed 61 1/3 innings across Double-A and Triple-A with a 4.55 ERA, 26.4% strikeout rate, 12.3% walk rate and 54.7% ground ball rate.
His fastball averages in the upper-90s and he pairs that with a high-80s slider he has been throwing more than half the time so far this year, while also mixing in a cutter and a changeup. The M’s will give him a chance to see if his stuff plays against major league hitters. He has a full slate of options and can be easily sent back down to Triple-A if he scuffles, or just if they need some fresh arms.
For now, the roster casualty is Legumina. He made his major league debut with the Reds but that club designated him for assignment in January of 2025. The Mariners sent cash to Cincinnati in order to get Legumina. His first season with the Mariners didn’t go especially well. He made 48 appearances for the big league club, throwing 49 2/3 innings with a 5.62 ERA. His 25.1% strikeout rate was a bit better than average but his 11.4% walk rate was a few ticks worse than par.
Due to those struggles, he was sent to the minors a few times and burned his final option year, leaving him out of options here in 2026. That put him on thin ice in terms of his roster spot. Thus far, he has thrown 11 2/3 innings over eight appearances. His 4.63 ERA is about a run better than last year but his strikeout rate is down to 17% in that small sample. The lower ERA is mostly due to the fact that none of the fly balls he has allowed have cleared the fence, a fact that wouldn’t have been sustainable.
His velocity is also down on most of his pitches. His four-seamer averaged 94.3 miles per hour last year but is down to 93.5 so far this year. His sinker has gone from 93.8 to 93 mph while his slider has dropped from 81.1 to 79.7 mph.
Legumina’s struggles and his out-of-options status have pushed him into DFA limbo, which can last as long as a week. The waiver process takes 48 hours, so Seattle could take as long as five days to explore trade interest, but they could also place him on waivers sooner than that. If he were to clear outright waivers, he would stick with the Mariners as non-roster depth. Since he doesn’t have a previous career outright or at least three years of service time, he would not have the right to elect free agency.
Photo courtesy of David Frerker, Imagn Images
Astros Select Daniel Johnson, Designate Christian Roa For Assignment
The Astros announced that they have selected the contract of outfielder Daniel Johnson. He takes the active roster spot of fellow outfielder Taylor Trammell, who has been placed on the 10-day injured list with a left groin strain. To open a 40-man spot, right-hander Christian Roa has been designated for assignment.
Houston has been infested with injury bugs. Trammell is now the 16th Astro on the IL. Trammell was just added to the roster a little over a week ago in response to the Jake Meyers injury. Since then, Joey Loperfido has also hit the IL, dealing another blow to the outfield. Now Trammell himself is injured, adding another outfielder to the injury pile.
Cam Smith is the only guy who has stayed in the regular outfield mix all year. Yordan Alvarez has been there but mostly serving as the designated hitter. Dustin Harris was just claimed off waivers a few days ago. Brice Matthews and Shay Whitcomb are on the bench and have been getting occasional starts.
Johnson, 30, was just signed to a minor league deal a few days ago in response to all these injuries. He had been released by the Marlins from a minor league deal but is now quickly in the majors with Houston. He hasn’t hit in the majors, with a .196/.243/.322 line in 152 scattered plate appearances in his career. He has been better at Triple-A, with a .255/.321/.448 line at that level over the years, though he has put up a rough .100/.143/.150 line so far this year.
Even if he doesn’t provide much with the bat, he can be useful in other ways. His sprint speed was ranked in the 94th percentile of qualified big leaguers last year and his glovework has been well regarded.
The center field job is currently up for grabs. Meyers was getting most of the playing time there until he hit the IL, which is when Trammell took over. Loperfido also had a few scattered starts there but he’s now on the IL as well. Matthews is the only other guy to get a start in center this year, so perhaps he will get more time, but he has a .151/.225/.384 line in his career so far.
Between Matthews and Johnson, the Astros can probably ride the hot hand, if one emerges. As the injured guys get healthy, Johnson is out of options and would have to be bumped off the 40-man if he gets nudged off the active roster.
With the Astros scrambling to cover center field, they have had to bump a few pitchers off the roster, even though they are dealing with huge injury issues there as well. J.P. France was designated for assignment and outrighted in recent days and now Roa has been sent into DFA limbo as well.
Roa, 27, was signed to a minor league deal in the offseason. He cracked the Opening Day roster but was shuffled to Triple-A and back as the Astros tried to keep fresh arms in the big leagues. He threw 8 2/3 innings in the majors, allowing five earned runs via 10 hits, seven walks and hitting three batters while striking out six.
Now that he’s in DFA limbo, he can be there for a week at most. The waiver process takes 48 hours, so the Astros could take five days to explore trade interest, but they could also place him on waivers sooner than that.
A former second-round pick of the Reds, he has a 4.52 ERA in 171 1/3 Triple-A innings. He did show improvement last year, as he got moved to a relief role by the Marlins and put up a 2.83 ERA in Triple-A. His 26.1% strikeout rate was good but he also walked 11.4% of batters faced. The ERA got a lot of help from a .225 batting average on balls in play and 81.5% strand rate.
He cleared waivers at the end of the season, which led to him becoming a free agent and signing with the Astros. He still has options and could perhaps be stashed by a team in need of extra depth but he also might clear waivers again, at which point he would have the right to elect free agency.
Photo courtesy of Jim Rassol, Imagn Images
Rockies Claim Blas Castaño, Designate Luis Peralta For Assignment
The Rockies have claimed right-handed Blas Castaño off waivers from the Mariners, according to announcements from both clubs. The righty had been designated for assignment by the Mariners a week ago. The Rockies have optioned him to Triple-A Albuquerque. In a corresponding move, left-hander Luis Peralta has been designated for assignment.
Castaño, 27, was originally an international signing of the Yankees out of the Dominican Republic. He was released in the summer of 2023 and scooped up by the Mariners. He impressed his new club in 2024, posting a 4.38 earned run average in 125 1/3 minor league innings, spending most of that in the hitter-friendly Pacific Coast League. He was added to the 40-man roster in November of 2024 to keep him from reaching minor league free agency.
He has spent the past year-plus as a depth arm for the Mariners without being needed much. He has only made one big league appearance, which was a three-inning relief outing in May of last year.
He tossed 126 2/3 innings for Triple-A Tacoma last year with a 5.19 ERA, in the unfriendly confines of the PCL. His 17.8% strikeout rate and 9.3% walk rate weren’t especially strong but he did induce grounders on 46% of balls in play. So far this year, he has been pitching out of the bullpen, throwing 6 1/3 innings over six appearances for the Rainiers. His 1.42 ERA in that small sample looks nice but his strikeout and ground ball rates are around the same level as last year.
The Mariners bumped him off their roster but the Rockies will take a shot on him. They may be attracted to his diverse pitch mix, something that has seemingly become an organizational preference. Statcast categorizes him as a five-pitch guy. He doesn’t throw his four-seamer often, leading instead with his sinker, in addition to a slider, cutter and changeup. His fastball and sinker average around 94 miles per hour, the cutter around 90, the changeup in the high-80s and the slider in the low-80s.
The Rockies could stretch him back out or keep in a relief role. They need pitching either way. They had a 5.99 ERA as a team last year, easily worst in the majors. They have a 4.40 mark so far this year, bumping them into them out of the bottom ten of MLB clubs, but in a much smaller number of games. Whether he’s working as a starter or a reliever, the Rockies can keep him at Triple-A until he’s needed. He can still be optioned for the remainder of this season and another season as well.
Peralta, 25, was acquired from the Pirates in the 2024 deadline deal which sent Jalen Beeks to Pittsburgh. Peralta, the younger brother of Freddy Peralta, showed some potential around the time of that trade but his stock has fallen.
Initially a starter, he was moved to a relief role by the Pirates. Between the Bucs and the Rockies, he tossed 47 2/3 minor league innings in 2024 with a 0.94 ERA. His 11.2% walk rate was high but he struck out 40.1% of opponents and induced grounders at a 48.8% clip. He also posted a 0.73 ERA in his first 12 1/3 big league innings.
2025 was a big step back, as he posted an ERA above 9.00 in both the majors and the minors. His 28% strikeout rate in Triple-A was still good but a big drop, while his walk rate climbed all the way up to 15.4%. In the majors, his 17.8% walk rate was worse than in the minors and also higher than his 15.8% strikeout rate, with both of those figures being well worse than average. So far this year, he has thrown 7 1/3 innings in Triple-A with a 31.1% strikeout rate but a 28.9% walk rate and 14 earned runs allowed.
Those struggles have nudged him off Colorado’s roster. DFA limbo can last as long as a week. The waiver process takes 48 hours, so the Rockies could take as long as five days to explore trade interest. His recent numbers are obviously not good but perhaps some clubs see a path to getting him back to the dominant form he showed in 2024. He still has options and could be sent to the minors if any club acquires him in the coming days.
Photo courtesy of Jayne Kamin-Oncea, Imagn Images
Orioles Designate Sam Huff For Assignment
The Orioles announced Tuesday that catcher Sam Huff has been designated for assignment. His roster spot will go to catcher Adley Rutschman, who’s returning from a brief stay on the 10-day injured list due to a minor ankle injury.
Huff was just selected to the big league roster last week. He appeared in three games with Baltimore, going 2-for-9 with a double, an RBI and five strikeouts in nine plate appearances. With Rutschman back from the injured list, however, the O’s can turn catching duties back over to their Opening Day tandem of Rutschman and prospect Samuel Basallo.
Huff, 28, signed a minor league deal with the O’s in January. The former Rangers top prospect has now played in parts of six big league seasons and slashed a respectable .246/.299/.427 with a dozen homers in 281 trips to the batter’s box. That’s roughly league-average offense, by measure of wRC+, and more than 10% better than the standard catcher. However, Huff’s output has come in spite of a colossal 36.3% strikeout rate. He’s needed a .354 average on balls in play just to get to league-average with the bat. As such, he’s highly unlikely to sustain his current pace.
On the defensive side of things, Huff has solid framing grades in his limited major league work. He’s struggled with blocking balls in the dirt and controlling the run game. The former seventh-round pick has just an 18.5% caught-stealing rate in his career and has been charged with eight passed balls in 527 innings behind the dish.
Baltimore will have five days to trade Huff or place him on outright waivers. (The latter seems likelier.) Waivers would be another 48-hour process, so the outcome of today’s DFA will be known within a week. If he clears waivers, Huff could be assigned outright to Triple-A Norfolk, where he hit .156/.250/.168 in 36 plate appearances before being summoned to the big leagues. However, since he’s previously been outrighted in the past, he’d have the right to reject a minor league assignment in favor of free agency.