I actually don't mind that Buchholz gets the start. I'm of the camp who believes he will be a good pitcher, an excellent pitcher, and that he will need to be able to make good starts like this one if he's going to get there.
Also, there really isn't a lot of pressure here. I mean, yeah, big stage, Yankee stadium, national TV, etc., but who expects the Sox to win today? Who even expects Buchholz to go 5?