Jorge Posada said he needed a day to clear his head, so he asked out of the lineup before the Yankees-Red Sox game on Saturday. He also said that he couldn't play due to a back injury and was upset with GM Brian Cashman for speaking to the media about his situation during the game.

Posada told manager Joe Girardi that he couldn't play about a half-hour before the first pitch. He was penciled in as the designated hitter, batting ninth.

"I told him I couldn't play today and that I needed time to first to clear my head. That was it. My back stiffened up a little bit. I was taking a lot of ground balls at first base and worked out and I wasn’t 100 percent," Posada said after the Yankees' 6-0 loss to the Red Sox.

Posada said he received treatment from a chiropractor during the game and hoped to be in the lineup on Sunday night. Girardi would not commit to putting the veteran back in the lineup for the finale of the three-game series.

By admitting the injury, Posada contradicted what Cashman told reporters earlier. Cashman talked to reporters in the middle of the game and said that Posada was not injured, but did not elaborate on the reason for the catcher's absence.

Posada was upset with Cashman's decision to talk to the press before the game.

"I didn’t know he made a statement. I don’t know why he’s going to make a statement during the game, in the middle of the game. I don’t understand that," Posada said. "You know, so that’s the way he works now."

When asked if was mad at Cashman, Posada replied: "Well, We’ll see. I think we should have waited for the game to be over to talk to whoever’s doing the game. It’s kind of like, you’re not supposed to do that."

Posada wasn't sure if there would be any lingering issues between he and Girardi or Cashman.

"I don’t know. I hope not. I hope we can move on and go on and play the season," he said.

Posada is hitting .165 in 32 games, his first as full-time DH.

"It’s been tough," he said.