Left-hander Patrick Sandoval and the Boston Red Sox reached agreement on a two-year deal, the team announced Monday.
Terms were not disclosed by the team, but ESPN reported last week that the contract is for $18.25 million.
Sandoval, 28, is coming off Tommy John surgery in June and could return for the second half of the 2025 season or be ready at the onset of the 2026 campaign.
He was non-tendered by the Los Angeles Angels last month after posting a 2-8 record and 5.08 ERA in 16 starts in 2024.
Sandoval compiled a 19-45 record with a 4.01 ERA in 107 career games (100 starts) with the Angels from 2019-24. His breakout season came in 2022, when he had a 2.91 ERA and struck out 151 batters in 148 2/3 innings.