http://en.wikipedia.org/wiki/Djokovi..._court_surface

Since 2008, Nadal and Djokovic have beaten each other in streaks. That is, one player wins at least 2 consecutive matches before the winner changes hands. Djokovic just beat Nadal after a 3 match streak that went to Nadal...

Is this relevant? Probably not. But it's something to think about if you find yourself in shock as Joker is serving for match point (should that happen).