As I understand the rules...injured pitchers are exempt from the normal post-season roster rules...You can bring up another pitcher anytime...but I don't think the pitcher replaced can return in the same series..
What?
We actually had tickets to Orioles vs Yankees tonight (cheap tix, seats not together) but didn't go. To be honest, I've had MORE than my share of Yankee Stadium (and a certain contingent of its fans) this season. Someday when I have more time I may elaborate on our experience with these "classy" Yankee fans. (Many are just fine, to be fair)
We'll be leaving here early tomorrow AM for the trip down to Baltimore to see the limping Red Sox (Fri and Sat games), so I can't do the usual late-night thing on FR tonight, unfortunately.