Radwanska, Kuznetsova breeze through at Tianjin Open

World number two and top seed Radwanska took just an hour to beat Germany's Tatjana Maria, ranked 109, winning 71 percent of first serve points.

Kuznetsova, 31, the second seed, advanced to the third round with a 7-5, 6-4 victory over Donna Vekic of Croatia

Danka Kovinic of Montenegro lost the first set against American Shelby Rogers. But her opponent only took three more games as Kovinic ran out a 2-6, 6-1, 6-2 winner, notching eight aces and saving seven break points out of 10.