Radwanska flops again but Murray ready to back himself

Fourth seed Agnieszka Radwanska became the first major casualty of the US Open when she was dumped out in the second round by Peng Shuai.

Radwanska dropped just one game in a rapid first-round win over Sharon Fichman but world No 39 Peng was a deserved 6-3 6-4 winner.

The Chinese player looked like she might have missed her chance when two match points went begging, one on the Radwanska serve at 5-3 and the second on her own delivery.