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The Giants placed Peguero on the 60-day injured list Monday due to a left hamstring strain, John Shea of the San Francisco Chronicle reports.
Peguero strained his left hamstring during the eighth inning of Sunday's win over the Rockies. The injury is severe enough for Peguero to go straight onto the 60-day IL, which means the earliest he's eligible to be reinstated is late July. Wilkin Ramos was called up from Triple-A Sacramento in a corresponding move.
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Giants' Joel Peguero: Dealing with hamstring injury
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Peguero suffered a hamstring injury in Sunday's 19-6 win over the Rockies, Susan Slusser of the San Francisco Chronicle reports.
Peguero pitched one-third of an inning before sustaining the injury in the bottom of the eighth. The right-hander missed the entire first month of the season while recovering from a Grade 2 hamstring strain that he suffered during spring training, and he could be headed for another stint on the injured list.
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Giants' Joel Peguero: Exits early Sunday
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Peguero (undisclosed) exited Sunday's contest against the Rockies in the bottom of the eighth inning, Susan Slusser of the San Francisco Chronicle reports.
Peguero entered the contest with the Giants up 17-6 heading into the bottom of the eighth. The right-hander got Willi Castro to fly out to open the frame, but he then pulled up lame while trying to field an infield single off the bat of Tyler Freeman in the following at-bat. It's unclear what injury Peguero may be dealing with, but JT Brubaker replaced him on the mound versus Colorado.
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Giants' Joel Peguero: Picks up hold Friday
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Peguero earned a hold in Friday's 8-6 defeat to the Rockies, allowing one hit and striking out one across two-thirds of a scoreless inning.
After giving up two earned runs while recording just one out in Monday's loss to Arizona, Peguero bounced back Friday. The right-hander entered in the sixth inning and surrendered a double to the first batter he faced, though he retired the next two hitters before being pulled. He threw nine of his 13 pitches for strikes in the brief appearance. The 29-year-old now owns a 2.70 ERA, 1.10 WHIP and 4:3 K:BB across 10 innings in 10 outings this season.
The Giants reinstated (hamstring) from the injured list Tuesday, Justice delos Santos of The San Jose Mercury News reports.
Peguero has been on the injured list since the beginning of the season due to a Grade 2 hamstring strain he suffered during spring training. He started up a rehab assignment at Triple-A Sacramento on April 7 and will now return to the Giants after posting a 4.82 ERA and 0.86 WHIP through 9.1 frames in the minors. The 29-year-old righty held his own in the big leagues last season, posting a 2.42 ERA and 1.03 WHIP over 22.1 innings, and he'll likely work in a setup or middle-relief role with San Francisco.
Giants' Joel Peguero: Scoreless inning in rehab game
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Peguero (hamstring) earned a hold and struck out two in a scoreless inning during Triple-A Sacramento's 5-3 win over Las Vegas on Tuesday.
Peguero was placed on the 15-day injured list March 25 (retroactive to March 22) with a Grade 2 left hamstring strain and began a rehab assignment with the River Cats on Tuesday. The right-hander experienced hamstring tightness in mid-February and didn't play in any Cactus League games before ultimately landing on the injured list, but he appears to be trending in the right direction. The 28-year-old made his big-league debut in 2025 with the Giants, recording a 2.42 ERA, 1.03 WHIP and 17:8 K:BB across 22.1 innings in 17 outings.
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Giants' Joel Peguero: Embarking on rehab assignment
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Peguero (hamstring) will start a rehab assignment with Triple-A Sacramento on Tuesday, Alex Pavlovic of NBC Sports Bay Area reports.
Peguero opened the regular season on the 15-day injured list due to a Grade 2 left hamstring strain that he aggravated in early March. He's eligible to return from the IL in mid-April but will likely need to have at least a couple of rehab outings under his belt before being cleared to make his 2026 regular-season debut. Peguero made his major-league debut Aug. 21 and appeared in 17 games for the Giants in 2025, finishing with a 2.42 ERA, 1.03 WHIP, four holds and a 17:8 K:BB across 22.1 innings.
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Giants' Joel Peguero: Tosses BP session
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Peguero (hamstring) threw a 20-pitch live batting practice session Monday, Shayna Rubin of the San Francisco Chronicle reports.
Peguero was moved to the 15-day injured list Wednesday due to a Grade 2 hamstring strain, so it's a positive sign that he's already been cleared to resume mound work. He'll presumably be re-evaluated Tuesday morning to ensure he didn't suffer any kind of setback, at which point the next step in his rehab could be established. A timetable for Peguero's return has yet to be disclosed by the club.
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Giants' Joel Peguero: Out with strained hamstring
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The Giants placed Peguero (hamstring) on the 15-day injured list Wednesday.
Peguero went down with a Grade 2 left hamstring strain in mid-February and never appeared in a Cactus League game. He's slated to fill a setup role in San Francisco once healthy, but it's unclear when the righty reliever will be ready.
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Giants' Joel Peguero: Suffers Grade 2 hamstring strain
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Peguero was diagnosed with a Grade 2 hamstring strain Wednesday, Alex Pavlovic of NBC Sports Bay Area reports.
Peguero is expected to be sidelined for multiple weeks. He initially suffered the hamstring injury 16 days ago but apparently aggravated it in recent days and will now face an even longer recovery period. Peguero was competing for a prominent role in the Giants' bullpen after pitching in 17 games for San Francisco last season. He registered a 2.42 ERA, 1.03 WHIP and 17:8 K:BB across his first 22.1 big-league innings.
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Giants' Joel Peguero: On track to play this week
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Peguero (hamstring) threw a live batting practice session Friday and is on track to play this week, Maria Guardado of MLB.com reports.
Peguero began experiencing tightness in his left hamstring in mid-February but is progressing toward his Cactus League debut. The right-hander made 17 relief appearances for the Giants in 2025 after his contract was selected from Triple-A Sacramento in August, recording a 2.42 ERA, 1.03 WHIP and 17:8 K:BB across 22.1 innings.
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Giants' Joel Peguero: Slated to face hitters Friday
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Peguero (hamstring) will throw another bullpen session Tuesday before advancing to a live batting practice session Friday, Justice delos Santos of The San Jose Mercury News reports.
Peguero's recovery from left hamstring tightness is coming along well. As long as he gets through his next two throwing sessions with no issues, he'll likely be cleared to pitch in Cactus League games. Peguero could be used in a setup role this season for the Giants.
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Giants' Joel Peguero: Progressing well, throws bullpen
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Peguero (hamstring) threw a bullpen session Saturday, Nick Piecoro of The Arizona Republic reports.
Peguero was limited to start spring training due to soreness in his left hamstring, but the reliever is reportedly feeling much better and appears to be closing in on game action. The 28-year-old right-hander tallied a 2.42 ERA across 22.1 innings with the Giants last season and could push for a setup role in 2026.
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Giants' Joel Peguero: Nursing tight hamstring
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Peguero will be limited over the next week due to left hamstring tightness, Alex Pavlovic of NBC Sports Bay Area reports.
The injury is likely to delay Peguero's first spring training appearance but won't affect his Opening Day availability as long as he avoids a setback. Peguero pitched well down the stretch for the Giants in 2025, posting a 2.42 ERA and 17:8 K:BB over 22.1 innings. Assuming good health, he could fill a setup role this season in San Francisco.
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Giants' Joel Peguero: Earns third hold of 2025
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Peguero picked up a hold in Friday's 6-3 victory over the Rockies, allowing one hit while striking out one across a scoreless inning.
Peguero entered the game in the eighth and gave up just one single, throwing eight of his 14 pitches for strikes. The right-hander has logged three consecutive scoreless outings, surrendering one hit while striking out four across three innings during that span. Overall, he owns a 2.53 ERA, 1.03 WHIP and 17:7 K:BB across 21.1 innings in 16 games this season.
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Giants' Joel Peguero: Allows two runs Monday
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Peguero allowed two earned runs on one hit and two walks across one-third of an inning in Monday's 8-1 loss to the Diamondbacks.
Peguero entered the game in the sixth inning with a runner on second. The right-hander then walked back-to-back batters before allowing a single and being replaced. Over 11 appearances this season, the 28-year-old owns a 1.84 ERA, 1.02 WHIP and 11:6 K:BB across 14.2 innings.
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Giants' Joel Peguero: Fans three in scoreless outing
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Peguero threw two scoreless relief innings in Wednesday's 12-3 win over the Cubs, striking out three.
Peguero retired all six batters he faced, throwing 18 of his 25 pitches for strikes. The right-hander had his contract selected from Triple-A Sacramento last Thursday, when he made his big-league debut. The 28-year-old has tossed three scoreless outings since joining the Giants, allowing four hits and one walk while striking out four across 5.2 innings.
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