Red Sox LHP Chris Sale undergoes Tommy John surgery

Boston Red Sox left-hander Chris Sale underwent what the team called “successful” Tommy John surgery on his throwing arm Monday, a procedure that is expected to sideline him into the 2021 season.

Famed surgeon Neal ElAttrache performed the ulnar collateral ligament reconstruction at the Kerlan-Jobe Institute in Los Angeles, according to a release by the club.

He has a 109-73 career record (35-23 with Boston) with a 3.03 ERA. Sale has 2,007 strikeouts in 1,629 2/3 innings over 312 games (232 starts). His strikeout-to-walk ratio, 5.37, is the best in baseball history.

Sale signed a five-year, $145 million contract extension in March 2019. The deal runs through the 2024 season and will pay him $30 million in 2020.

–Field Level Media (@FieldLevelMedia)