Reiver Sanmartin - MLB News, Rumors, & Updates

Headed to San Francisco The Giants claimed Sanmartin off waivers from the Reds on Thursday, Alex Pavlovic of NBC Sports Bay Area reports.

Impact Sanmartin will get a fresh start out west after spending the last six seasons as part of the Reds organization. The left-hander, who turns 30 in April, appeared in one big-league game during the 2025 campaign. He tallied a 2.67 ERA, a 1.24 WHIP and a 55:18 K:BB across 67.1 innings for Triple-A Louisville.

NOVEMBER 6, 2025 • ROTOWIRE

Jettisoned to minors The Reds optioned Sanmartin to Triple-A Louisville on Wednesday.

Impact Sanmartin gave the Reds 1.2 innings out of the bullpen in his lone day with the team giving up one unearned run in Tuesday's loss to the Blue Jays. Lyon Richardson is taking Sanmartin's spot on the roster and in the bullpen.

SEPTEMBER 3, 2025 • ROTOWIRE

Contract selected The Reds selected Sanmartin's contract from Triple-A Louisville on Tuesday, Charlie Goldsmith of Fox 19 Now Cincinnati reports.

Impact Sanmartin hasn't pitched in the majors since 2023 but has had a nice season at Louisville, collecting a 2.79 ERA and 44:17 K:BB over 58 innings. He could be asked to eat multiple innings during a bullpen game Tuesday versus the Blue Jays.

SEPTEMBER 2, 2025 • ROTOWIRE

Healthy at Triple-A Sanmartin (elbow) has produced a 5.40 ERA, 1.35 WHIP and 3:2 K:BB in 6.2 innings over his seven relief appearances since being activated from Triple-A Louisville's 60-day injured l...

Impact Sanmartin opened the season on the shelf at Triple-A while he completed his recovery from his July 7, 2023 Tommy John surgery. Just over 12 months after surgery, he was cleared to begin a rehab assignment in the rookie-level Arizona Complex League, where he made three appearances before being added back to the Triple-A roster. Sanmartin previously made 59 appearances (six starts) at the big-league level with the Reds from 2021 through 2023 but will likely need to show better results at Triple-A before he gets another look in the majors.

AUGUST 11, 2024 • ROTOWIRE

Starting rehab assignment Sanmartin (elbow) was assigned to the rookie-level Arizona Complex League on Tuesday to start a rehab assignment, Charlie Goldsmith of The Cincinnati Enquirer reports.

Impact Sanmartin re-signed with the Reds on a minor league deal in November. He was on the Opening Day roster in 2023, but had Tommy John Surgery in the middle of the season. Prior to the injury, the southpaw had a 7.07 ERA across 14 appearances.

JULY 16, 2024 • ROTOWIRE

On mend from Tommy John surgery The Reds confirmed that Sanmartin (elbow) underwent season-ending Tommy John surgery July 7, MLB.com reports.

Impact At the time Sanmartin went under the knife, reports merely stated that he had surgery to repair his UCL, but it wasn't specifically noted whether he had Tommy John surgery or an alternative procedure such an internal brace surgery, the latter of which often carries a shorter recovery timeline. With Sanmartin having now been confirmed to have had Tommy John surgery, he'll be in store for at least a year-long rehab and recovery process, meaning that he likely won't be an option for the Cincinnati bullpen until after the 2024 All-Star break.

AUGUST 29, 2023 • ROTOWIRE

Undergoes season-ending surgery Sanmartin (elbow) underwent season-ending UCL surgery back on July 7, Mark Sheldon of MLB.com reports.

Impact The initial hope was that Sanmartin would be able to return in 2023, but a more serious issue was discovered beyond the initial diagnosis of a stress reaction in his left elbow. It wasn't reported as Tommy John surgery specifically, but this will take Sanmartin out for the remainder of the season and could threaten his availability for the start of spring training.

JULY 29, 2023 • ROTOWIRE

Moved to 60-day IL The Reds transferred Sanmartin (elbow) from the 15-day injured list to the 60-day injured list Sunday, Paige Leckie of MLB.com reports.

Impact Sanmartin is currently expected to miss the next six weeks while he recovers from a stress reaction in his left elbow. The southpaw reliever is now off the 40-man roster and could be back as a middle-innings option for the Reds right around the All-Star break.

MAY 14, 2023 • ROTOWIRE

Placed on 15-day IL The Reds placed Sanmartin on the 15-day injured list, retroactive to May 8, with a left elbow stress reaction.

Impact Sanmartin will be away from the club for at least a couple of weeks. He has struggled to a 7.07 ERA, 1.93 WHIP and 13:10 K:BB through 14 innings of relief this season with Cincinnati.

MAY 9, 2023 • ROTOWIRE

Dealing with sore elbow Sanmartin departed Sunday's appearance versus the White Sox due to left elbow soreness, Charlie Goldsmith of The Cincinnati Enquirer reports.

Impact Sanmartin was charged with three runs over 1.1 innings Sunday before exiting. He will be re-evaluated Monday, at which point we should know whether he'll require a stint on the injured list.

MAY 8, 2023 • ROTOWIRE

Grabs win in Reds' comeback Sanmartin (1-0) earned the win Tuesday against the Rangers, picking up a strikeout in a clean eighth inning.

Impact Sanmartin set the Rangers down in order in the top of the eighth before the Reds rallied to take a 7-6 lead in the bottom of the frame, handing Sanmartin his first win of the year. The 27-year-old left-hander has allowed four runs in 11.1 innings this year, good for a 3.18 ERA. He has a 1.41 WHIP and 10:7 K:BB. Sanmartin should see a fair amount of action this year as the Reds' best left-handed option out of the bullpen, though it won't likely translate to much in the way of fantasy production.

APRIL 26, 2023 • ROTOWIRE

Situational reliever Sanmartin retired the only batter he faced Saturday, retiring Oneil Cruz on a ground ball to end the eighth inning.

Impact Because the Reds were up by four runs at the time, Sanmartin was not eligible for a hold. It appears that he'll be deployed to retire key lefties late in games this year after beginning 2022 as a starter.

APRIL 2, 2023 • ROTOWIRE

Recalled by Reds Sanmartin was recalled by the Reds on Monday, Charlie Goldsmith of The Cincinnati Enquirer reports.

Impact Sanmartin broke camp in the major-league rotation but was optioned within a month after struggling to an awful 13.78 ERA across five appearances. His 7.36 ERA in 18.1 innings as a swingman for Triple-A Louisville hardly inspires confidence, though his 26:4 K:BB at that level is far more encouraging.

JUNE 13, 2022 • ROTOWIRE

Optioned after poor start The Reds optioned Sanmartin to Triple-A Louisville following Sunday's 10-1 loss to the Rockies, Bobby Nightengale of The Cincinnati Enquirer reports. He dropped to 0-4 after giving...

Impact Sanmartin has allowed five or more runs in four of his five outings this season, with the one exception being when he came in after Luis Cessa opened for him. With the Reds needing to pare down their roster from 28 to 26 prior to Monday's deadline, Sanmartin was an obvious option to be demoted. The Reds have a doubleheader coming up next Saturday against Pittsburgh, so Sanmartin could be designated as the 27th man for the twin bill and make his return from Louisville if needed to make a spot start.

MAY 1, 2022 • ROTOWIRE

Charged with nine runs in loss Sanmartin (0-3) took the loss to the Padres on Tuesday, allowing nine earned runs on eight hits and one walk over three-plus innings. He struck out two batters.

Impact Everything unraveled for Sanmartin in the fourth inning, although not a lot outside of Eric Hosmer's home run was hit particularly hard. Regardless, Sanmartin now sits with a 10.91 ERA this season, so he may very well be the odd man out of the rotation once Luis Castillo (shoulder) is ready to go. The Reds could even turn elsewhere in the meantime or perhaps go with a bullpen day in Sanmartin's spot.

APRIL 27, 2022 • ROTOWIRE

Falls to 0-2 Sanmartin (0-2) took the loss to the Padres on Tuesday, allowing five runs on eight hits and one walk over 5.1 innings. He struck out four.

Impact Tommy Pham once again gave the Reds an early lead, and just like Nick Lodolo did in the series opener, Sanmartin gave the lead right back in the bottom of the first on a two-run Manny Machado homer. Sanmartin now sits with a 7.11 ERA and 8:6 K:BB in 12.2 innings this season. He looked comfortable and pitched better following an opener in his April 14 outing against the Dodgers, so perhaps the Reds will experiment with the lefty in the bulk-relief role again soon. Given the team context, Sanmartin will be difficult to deploy in any format, at least until he shows more consistency.

APRIL 20, 2022 • ROTOWIRE

Thrives in bulk-relief role Sanmartin pitches five scoreless innings against the Dodgers on Thursday, allowing two hits and no walks while striking out two. He didn't factor in the decision.

Impact Sanmartin was originally scheduled to start the contest, but the Reds instead tabbed Luis Cessa to work as an opener with Sanmartin following behind him. Cessa didn't perform well in the role, giving up five hits and three runs in one frame, but Sanmartin allowed Cincinnati to get back in the game with five scoreless innings. The left-hander yielded only two baserunners -- both on singles -- and threw 48 of 75 pitches for strikes. It remains to be seen how the Reds will use Sanmartin moving forward; if he moves back into a starting role, his next start will likely come in San Diego against the Padres next week.

APRIL 15, 2022 • ROTOWIRE

Not starting, could follow opener Sanmartin won't start Thursday's game against the Dodgers but could follow an opener, Charlie Goldsmith of The Cincinnati Enquirer reports.

Impact The 25-year-old was previously penciled in to start Thursday's series opener, but reliever Luis Cessa will instead take the mound for Cincinnati. The team hasn't officially announced that Sanmartin will pitch, but following an opener could be beneficial against a stacked lineup after giving up five earned runs in his first start of the season.

APRIL 13, 2022 • ROTOWIRE

Struggles with control Sanmartin gave up five runs on four hits and five walks over 2.1 innings in Friday's loss to Atlanta. He struggled in the relatively cold weather to find a grip on the ball, Charli...

Impact Unlike many of the Reds other young starters, Sanmartin doesn't throw especially hard and relies on typically good control to get by. When that's taken away, he's especially vulnerable, as was the case Friday night. He'll need to be a lot sharper in his next scheduled outing, a road start Thursday against the Dodgers.

APRIL 9, 2022 • ROTOWIRE

Reds comeback falls just short, rookie Reiver Sanmartin struggles in a loss to the Braves Reiver Sanmartin was known for his command in the minor leagues, but he walked five batters on Friday against the Braves.

APRIL 9, 2022 • CINCINNATI.COM

Clinches rotation spot Manager David Bell said Wednesday that Sanmartin will start the Reds' second game of the season April 8 in Atlanta, Bobby Nightengale of The Cincinnati Enquirer reports.

Impact Coming into spring training, Sanmartin was one of a handful of pitchers battling for the two open rotation spots behind Luis Castillo, Sonny Gray and Tyler Mahle. The Reds then traded Gray to the Twins and acquired a replacement for him in Mike Minor, but the latter won't be ready to go for the start of the season while he recovers from a shoulder injury. Meanwhile, Castillo is also set to begin the campaign on the injured list due to a shoulder issue of his own, so Sanmartin was able to claim a rotation spot without having to truly battle for the job. Whether Sanmartin maintains a starting role by the time Castillo and Minor are healthy will hinge on his performance over the first couple of weeks of the season. The 25-year-old lefty turned in an impressive 2021 campaign at Triple-A Louisville before making two solid late-season starts for the big club in which he allowed two earned runs over 11.2 innings while striking out 11 and walking two.

MARCH 30, 2022 • ROTOWIRE

Battling for rotation spot Sanmartin is one of the candidates for the Reds' three open rotation spots to begin the season, Charlie Goldsmith of The Cincinnati Enquirer reports.

Impact Sanmartin enjoyed a breakout of sorts last season, culminating in two starts at the end of the season with the big club. Working against him is that he doesn't throw all that hard, averaging 89.4 mph. The Reds view him as a pitcher that can both start or relieve. "Sanmartin gives us great flexibility because he can be a starter," manager David Bell said. "He could potentially also be a reliever. We don't have a lot of left-handed options in the bullpen. It's nice to have the ability to do either, depending on how everything else shakes out."

MARCH 28, 2022 • ROTOWIRE

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