Los Angeles Angels reliever Jake Jewell had to be taken off the field on a stretcher on Wednesday night.
Jewell was hurt after a play at home plate in the bottom of the eighth inning against the Boston Red Sox at Fenway Park.
After throwing a wild pitch, Jewell raced to the plate to cover and appeared to slip before getting there, with his right ankle getting caught beneath him.
The right-hander remained down on the ground for several minutes before a stretcher was wheeled out to home plate. He was taken to a local hospital.
"He's getting evaluated, I think, at Massachusetts General," Mike Scioscia said. "Hopefully we'll get an idea of what's happening sometime tonight."