Duffey was removed from Sunday's start against the Nationals in the fifth inning after he was struck in the right shoulder by a line drive, James Wagner of the Washington Post reports.
Team trainers and manager Paul Molitor met with Duffey on the mound before quickly deciding to pull the right-hander from the game, ending his afternoon with one run allowed on five hits and two walks over four innings. It's too early to tell if Duffey's injury is anything significant, but more clarity on that front should come when he's evaluated in the locker room.