Joel Peguero: Everything you need to know

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.

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.

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.