What happened: The Boston Red Sox released right-handed reliever Zack Kelly on Monday. The move comes after Boston designated Kelly for assignment during recent front-office moves. Kelly cleared waivers and enters the open market as an unrestricted free agent.
Why it matters: Kelly's release clears a 40-man roster spot as Boston reshapes its bullpen depth heading into the 2027 season. The right-hander spent parts of three seasons in the organization, working primarily as a middle-relief arm.
By the numbers: Kelly posted a 4.04 ERA across 131.1 innings pitched during his tenure with Boston.
What to watch: Kelly will look to secure a major-league bullpen role or minor-league contract with an invite to spring training.