"We've seen so many guys miss so much time with them, and they're still missing time," manager Joe Girardi said. "I heard [the Twins' Justin] Morneau talking about when he dove for a ball at first base, the concussion symptoms came back. You just don't know what's going to happen."
The harsh reality is that Cervelli -- a high-energy player who has built a good rapport with some of the Yankees' pitchers, especially ace CC Sabathia -- hasn't played in over a week, and less than two weeks remain in the regular season.
Cervelli's DL stint is retroactive to Sept. 9, making him eligible to return on the 24th. But because concussion symptoms can be so dangerous and unpredictable, Girardi admits he's at the point where he has to at least prepare for Cervelli not being available for the playoffs (the Yankees' magic number to clinch a spot was seven entering Friday's series opener in Toronto).
That means Jesus Montero and Austin Romine need to get further acquainted with life behind the plate in the Majors -- and quickly.
"If you're fortunate enough to get into the playoffs, conceivably Russell [Martin] could catch every game," Girardi said. "But you want [Romine and Montero] as familiar with your pitching staff as possible in case something were to happen."
In other injury news, Robinson Cano was in the lineup Friday, two days after being struck by a pitch in the right foot during the 12th inning of a 2-1 loss against the Mariners on Wednesday. X-rays on the foot came back negative, and Girardi hit Cano cleanup in the series opener against the Blue Jays on Friday.