Including this contest, Yankees starters, to date, with games where IP>=6 and ER<=3:

Chien-Ming Wang: 9
Andy Pettitte: 8
Mike Mussina: 8
Darrell Rasner: 5
Ian Kennedy: 2
Philip Hughes: 1
Joba Chamberlain: 1

Mike Mussina is clearly in the team picture for the “ace” of the Yankees starting staff according to these statistics. It will be interesting to see this leader board at the end of the season – and whether or not Moose can stay in the chase. If he does, that would be a huge pelt on his belt when it comes time to get his next contract (after this season).