He's got form for doing this though - so many matches late last year had this storyline. Sad to see really - Tomic's definitely got the physical talent, but mentally he's not competitive enough yet.
Maybe something personal is not going well. I don't know. I've seen him play tremendous tennis in the past; even his match against Federer was very good. Last year is last year. Anyway, I am not counting him out based on a few bad matches. If he's got the game, he will eventually sort out the mental part as well. Not everyone's the same.