He was injured. I can tell you in the MLS Cup Final and the friendlies following that, he looked back to his stellar self. Not worried about his stamina. He might still be a little rusty, but his pace, passes and decision making were fine in November/December.
Seriously bummed that Fox is saying he won't start. First off because so many people want to see it - look at this thread as an example, second off because he started immediately in 2010 against Arsenal (what changed now?), third off because you know, attacking line-up and all.
If he doesn't see time at all on Wednesday (doubtful), I worry for Moyes' person at the game. Fans need a spark to adhere to.