Granted he had the shoulder problem a couple years ago, but does that and a tweaked hammy really make him injury prone?
Was he ever really here?
So the guy who's won double digit games the last 15 seasons is prone to injury?
Well sure, but he's also the #5 starter when Hughes is healthy. The 5 hole is a shaky start for any team.
I think it's safe to say that Hughes will only improve with more starts.
Right now you are right, but Wang and Mussina will get back to their old form in the next couple of weeks, and then we will have at least 3 guys who can give us 6+ IP per start:
Innings Per Start last year
Mussina 6.1
Wang 6.2
Pettitte 6.0