After a drawn-out free agency, Montgomery joined the Diamondbacks shortly before last season on a one-year, $25 million contract with a $22.5 million player option for 2025.

He proceeded to have the worst year of his career, pitching to a 6.23 ERA with a 1.65 WHIP in 117 innings.

Montgomery previously had Tommy John surgery during 2018 with the Yankees.