US Open 2012: Laura Robson delighted with 'massive' win

Britain's Laura Robson says she is full of confidence in her game after beating 2011 French Open champion Li Na 6-4 6-7 (5-7) 6-2 to reach the the fourth round of the US Open.

Robson, who beat Kim Clijsters in the second round, will face defending champion Sam Stosur of Australia next.

  • Tennis