The quarterfinals however , was Saina 's first big test .
The second round saw an even more ruthless Saina Nehwal as she overcame world no 19 Yao Xue 21 - 13 , 21 - 9 .
The quarterfinals was Saina Nehwal 's first big test .
The second round saw an even more ruthless Saina Nehwal as she overcame world no 19 Yao Xue 21 - 13 , 21 - 9 .