Orioles closer Zach Britton ruptured his Achilles during a workout Tuesday and is expected to have surgery tomorrow, according to MLB.com.
— Shawn Stepner (@StepnerABC2) December 20, 2017
The Orioles tweeted about his injury and wished him a speedy recovery.
In 2016, Britton led the league with 47 saves. He was an All-Star and finished fourth in Cy Young voting that year.
Britton has been the subject of trade rumors because he will be a free agent next year.
The injury is expected to sideline him for 4 to 6 months.