Radwanska cruises to Shenzhen Open quarters

Top-seeded Agnieszka Radwanska of Poland had little trouble cruising into the quarter-finals of the Shenzhen Open taking place at the Shenzhen Longgang Tennis Centre in China on Tuesday.

Radwanska needed just 79 minutes to crush Romania's Sorana Cirstea 6-0, 6-3 to set up a quarter-final matchup against American eighth seed Alison Riske.

The match started badly for Cirstea as she dropped serve in the opening game but almost broke straight back as Radwanska saved five break points to lead 2-0. Two more service breaks in the third and fifth games handed Radwanska the set 6-0.

Cirstea started off the second set by holding her serve for the first time and then immediately broke her opponent's serve to lead 2-0 but Radwanska came storming back claiming the Romanian's serve three times to win the set and match 6-3. 

In other second round matches, Riske thumped Tsvetana Pironkova of Bulgaria 6-1, 6-1 while in an upset, the unseeded Wang Qiang of China beat Romanian seventh seed Monica Niculescu 7-6(1), 6-4.

British third seed Johanna Konta spent one hour and 37 minutes on court to fight back from a set down to defeat Vania King of the US 1-6, 6-3, 6-2 to set up a quarter-final clash with the winner of the match between Kristyna Pliskova of Czech Republic and Taiwan's Chang Kai-Chen.