After Murray took the first game of the third set , former world number six Simon went 40 - 0 down on his own serve .
The Scot broke at the third attempt for a crucial 2 - 0 lead .
After Murray took the first game of the third set , former world number six Simon went 40 - 0 down on his own serve and the Scot broke at the third attempt for a crucial 2 - 0 lead .