Watching that match too, Del Potro's forehand is vicious.
Djokovic out, good news for Murray
Murray beat Juan Monaco 6-3, 6-1 earlier to progress to the third round but Konta has just lost the first set against Kuznetsova.
Fancy a Murray vs Del Potro final.
I think we're going to be miles short of the medal target. So many epic fails so far, we don't seem to have the midas touch of 2012. I think they were aiming for about 48 medals. We're 10th in the tables so far, with China and then USA at the top I believe.
Andy Murray won his second match with relative ease. 6 - 3 and 6 - 1. He's the strong favourite for the gold medal.