I'm going to make a bold prediction, Phelps will perform tonight and he deserves a shot at staying in the rotation. With Nuno's inconsistency and Aceves' saavy, it seems clear that Nuno should be sent to the pen as a situational reliever and Aceves should get to start as well.
This would give NY a MUCH better chance to win a few games until things shake out with Pineda coming back at some point and potentially bumping...Phelps. Yes, I'm implying Aceves and his crafty ways should be a starter for the duration of the year.
I can hear you guys now, "Aceves had one good relief appearance and you want to what??" But the Yankee staff is THAT bad folks. Aceves could really help the consistency. He has the track record of success and most importantly, he had 94mph on that perfectly located fastball and he has pinpoint control. START THE GUY and be done with this!