Cvac was exhausted? How come he showed no signs of exhaustion after his 5 hour match against Stan at the AO this year? How come he showed no signs of exhaustion after his semi against Murray at last year's AO, and then went on to play a 6 hour final against Nadal? Was he exhausted during his win streak in 2011 that stretched all the way into June? Didn't look like it to me. He was not exhausted at all in his match yesterday, and hasn't shown one sign of being so since his miraculous turn around in stamina in 2011. He's easily the fittest guy on tour.