If it is vilitigo, there is really nothing he can do. Most available treatments are time consuming and he hardly stayed in one place long enough. The topical cream that you can apply to the white patches contains steroid so that is out of question.
Anyway, I think we are unnecessarily fretting. The absence of the usual panic/nervousness before any Nole match has made us look for new avenues to worry about. Really, He can't be that careless to overlook such serious matters.