Look, by viable alternative, I mean a QB who is capable of replacing a mediocre starter who - by the very fact that he is being replaced - is underperforming even by his modest standards. THAT is what Ryan Fitzpatrick has to be concerned about. Vince Young simply couldn't be much worse than an underperforming Fitzpatrick. So if Fitz buckles even the slightest, whether the team is doing poorly or doing well, there will be a big temptation to try VY. If you were Fitzpatrick, you would be feeling more than normal NFL pressure to perform, actually to improve.