Posada was clipped on his glove hand by a foul tip off the bat of the Blue Jays' Fred Lewis during Sunday's 7-6 win over the Blue Jays at Yankee Stadium, forcing him to leave the game. With Francisco Cervelli serving as the Yankees' only other catcher, the club may need to summon a third backstop if Posada does not heal quickly.
"I think we'll know in the next 24 or 48 hours if we need to do something, if he can physically play through this or we need to possibly add a third catcher," manager Joe Girardi said.
Girardi said that Posada "could be a couple of days" away from game action. The 38-year-old has been nicked often this season, having spent two weeks of May on the disabled list with a hairline fracture of his right foot. He also missed time with right knee and calf issues in April.
"It's frustrating," Posada said on Sunday. "I'm feeling good at the plate and getting comfortable there. It's just one of those years."
Posada has worn a protective pad inside his glove to guard against foul tips, but the unpredictable nature of catching makes it impossible for him to be completely protected.
"The thing is, where there's a foul tip, the ball doesn't go where your eyes expect it to," Girardi said. "That's the hard thing to guard against."