Stewart leaves Thursday with groin injury, MRI will determine the extent of the injury
Stewart appeared to pull up while going from first to third on Robinson Cano's RBI single with two outs in the bottom of the seventh, and was in obvious discomfort when manager Joe Girardi and trainer Steve Donohue visited him while the Mariners made a pitching change.
"It was his left groin, when he went around the base he said he felt something, but it wasn't a pop," Girardi said after the game.
The catcher stayed in the game after the visit, but after Vernon Wells popped out to second to end the inning, Stewart went back to the dugout and was replaced behind the plate by Austin Romine to start the eighth inning.
"He said he was okay, and then when we saw him run, he said it continued to hurt, and we had to get him out," Girardi said.
As Stewart was undergoing the MRI and the severity of the injury was still unknown, Girardi said he was unsure if it would force Stweart to the disabled list, and the skipper also hadn't thought about whether or not the team would have to add another catcher even if Stewart is only to miss a few days.
Either way, the Yankees do not have another catcher currently on the 40-man roster, and the situation could be further complicated by the fact that down in Triple-A, Bobby Wilson was a late scratch from Scranton/Wilkes-Barre's lineup on Thursday, with the RailRiders giving no further explanation as to why.