Newsday: O’Brien: Posada out, prognosis unknown

Barnald, sends over this Posada/A-Rod update.

Those of you who watched today’s game may have noticed that Jorge Posada was not throwing as well as normal. He left the game early, and his shoulder is a concern. He said he doesn’t feel pain there, but that he is lacking arm strength. To be honest, Posada sounded worried to me. He is going to have an MRI on his shoulder tomorrow.

Girardi said: “The ball’s just not coming out of his arm the way you’d like it to. ... There’s a weakness there, and we need to get his arm strength to wherer it needs to be.”

Posada: “I’m not 100 percent. I’m not helping the team out. It’s just as simple as that.” As for how it feels, he said: “Dead, like you’ve got no strength.”

...Alex Rodriguez answered a couple questions about the possibility of filling in at shortstop. He said: “I haven’t taken a ground ball over there in five years, not even playing around, so it would definitely be a challenge. If Joe thought that was the best combination, I would let it fly.”