Peter Abraham reports that today's starter, Joba Chamberlain, burst a blood vessel in his right thumb during batting practice last night and may not be able to make his start.

So, what was Joba doing during BP, you ask? Girardi said that he was flipping a ball underhanded. That's an interesting way to get injured. Apparently it doesn't hurt, but it is black and blue.

He'll try to go, but if he can't, Alfredo Aceves will step in. And that's why Aceves wasn't used last night.