Red Sox Veteran Pitcher Becomes Free Agent After Recent Demotion

Brad Keller elected to become a free agent, according to multiple reports Tuesday, ending the pitcher's time with the Boston Red Sox.

The Red Sox optioned Keller to Triple-A Worcester after Sunday's series finale against the Houston Astros at Fenway Park. Keller had the right to opt for free agency, though, as a player with five-plus years of MLB service time. And he exercised that right.

The 29-year-old signed with the Red Sox in May after making five appearances with the Chicago White Sox to begin 2024. He appeared in 10 games with Boston, posting a 5.66 ERA in 20 2/3 innings.

Keller spent six seasons with the Kansas City Royals from 2018 to 2023. He's never been a dominant force, but he's proven capable at various points in his career, which could open the door for him to land another big-league job upon leaving Boston.

The veteran right-hander spent most of his Royals tenure working as a starter. The Red Sox used him exclusively out of the bullpen, where he usually was called upon to go multiple innings, but his next team certainly could use him in various roles based on need.

Keller owns a 38-56 record and a 4.32 ERA in 165 career MLB appearances (116 starts).