One unsettling fact for the Yankees is the difference when Jorge Posada catches. With Posada behind the plate, the Yankees’ pitchers have a 6.31 E.R.A. The combined E.R.A. with Francisco Cervelli, Jose Molina and Kevin Cash is 3.81.
Posada has caught four starts by Chien-Ming Wang, whose job status is now evaluated on a game-by-game basis. Even removing those starts, the staff’s E.R.A. with Posada is still high, at 5.47.
Posada, 37, has handled many exceptional pitchers in his career. Although some, like Randy Johnson and Mike Mussina, have preferred other catchers, Posada does not have to apologize for his résumé. Posada takes his job seriously and is an emotional engine of the team.
Yet Burnett, in particular, seems to struggle with him. In Burnett’s four starts pitching to Posada, opponents have batted .330. In nine starts with the other catchers, the average is .223.
When he lost a six-run lead in Boston in April, Burnett questioned the pitch selection, though he blamed himself, not Posada. Asked Sunday about the difference in pitching to the rookie Cervelli, Burnett gave a careful but revealing answer.
“I think it’s just a matter of — I don’t know if it’s the catcher — but we threw curveballs in fastball counts, we had them looking for something and they had no idea what was coming, I don’t think,” Burnett said. “That’s huge.”