As you may have heard, Andy Pettitte has returned to the New York Yankees. The pitcher retired somewhat abrubtly, as his last season (2010) was a very good campaign that saw him go 11 and 3 with an All Star appearance, so there was reason to think he could continue. Some have speculated that his retirement was brought on by his then impending role in the Roger Clemens trial, and as he has stated recently that he is "mentally ready to play", we have to wonder if there is some validity to that. Regardless of his reasoning, Pettitte's return raises…