Trying to win a tennis match is very desperate indeed. If you're match point down, you should just accept it. Better luck next year.
Take it easy. If you watched the match you should know that at that point Djokovic had very little hope and it was obvious from his expression. That shot was a desperate one. It landed in so he's a hero but against Murray, same kind of return went long. It was a gamble that paid off in his career best year where everything went his way. Remember he was two mp down at the time. Don't expect me to believe he carefully planned to smack a return winner down two mp.
Radwanska received similar arrogant reactions when she spoke her mind on grunting because she wasn't beating the shriekers. Stakhovsky, Simon were also ridiculed here for being losers. Wtf? Are only winners allowed to comment?