Brian_McCann

Yankees catcher Brian McCann left Friday's game with a mild concussion, the team said.

(Saed Hindash/The Star-Ledger)

NEW YORK — Yankees catcher Brian McCann left Friday's game against the Indians in the sixth inning with a mild concussion, the team said.

He's day-to-day, it said.

It wasn't immediately known what caused the concussion. But the 30-year-old backstop took a foul ball off the face mask earlier in the night.

Francisco Cervelli took over for McCann, leaving the Yankees without a backup catcher. It also further depleted the Yankees' already-thin bench.

Only light-hitting infielder Brendan Ryan remained as possible pinch hitter. First baseman Mark Teixeira has a hand injury and couldn't grip a bat without soreness as of early Friday.

The Yankees are also playing with an extra bullpen arm.