Stan is playing well, Murray is poor today.
All this "not interested" talk is nonsense - he's having a bad day and Wawrinka is hitting winners from all over the place.
We've had Djokovic losing to Haas earlier in the season, and no one claimed he couldn't be bothered. Just up against someone who is better on the day.
6-1 6-2 is a bit of a hammering though. Can't remember the last time one of the big 4 was beaten in that fashion.