Wang Qiang claimed her first WTA Tour title when Zheng Saisai retired in the second set of an all-Chinese JiangXi Open final on Sunday.

Second seed Wang came from a break down to win the opening set 7-5 and was 4-0 up in the second when her compatriot decided she could not continue in Nanchang.

The 112-ranked Zheng told her coach that she was suffering from fatigue late in the first set of what was a maiden final for both players.

World number 78 Wang served six aces and won 89 per cent of points on her first serve, claiming a maiden tournament win at the age of 26.

She lost the first two games of the match, but gradually got into her stride, breaking back at 5-5 with a blistering inside-out forehand return winner and broke again to take the first set.

Zheng was flagging in the second set and Wang was only a point away from going 5-0 up when the sixth seed brought the match to an end.