China Open: Sara Errani into quarter-finals after 3-6, 6-3,

In China Open, there was a pretty even match-up as world number 20 Sara Errani faced the 21st ranked Andrea Petkovic with a spot in the quarter-finals on the line. The Italian got the better of the German last time they played, as Errani prevailed in stright sets at the French Open.

Petkovic starts out looking like she was going to avenge that loss, the powerful forehand gives her this point as she takes the opening set 6-3.

The German would get the upperhand early in the second as another crisp forehand gives her two break points in the opening game -- but she would falter and drop the frame 6-3.

The decider would belong to the Italian -- check out this incredible passing shot that helps her break her opponent and take a 5-2 lead.

To match point, Petkovic would show some fight staying in this rally, but Errani changes tactics and this moonball seems to throw the German's timing off as she promptly hits it into the net, handing the match to the Italian, as she prevails in 3 sets and advances.

Sara Errani of Italy returns a ball during the women's singles third round match of China Open Tennis Tournament against Andrea Petkovic of Germany at the National Tennis center in Beijing, capital of China, Oct. 7, 2015. Sara Errani won 2-1.(Xinhua/Xing Guangli)

Swiss outduels Spaniard 6-4, 4-6, 7-5 to progress

That is Spain's Carla Suarez Navarro serving to stay in the match against Timea Bacsinszky. The Swiss would be the victor thanks to a heavy forehand that sets her up for a backhand winner at the net. The win keeps Bacsinszky in the hunt for the year-end finals in Singapore.

Pole wins when American retires after opening set

Agnieszka Radwanska was able to grab the opening set in her match as Madison Keys finds the net.

The American would then need a medical time-out to have her injured thigh looked at.

But she could not continue -- decides to withdraw from the match, which means the Pole will face Angelique Kerber in the quarter-finals after she saw off Caroline Wozniacki.

Chinese pair defeat Garcia & Srebotnik 7-6, 6-3

In women's doubles, Caroline Garcia of France and Slovakia's Katarina Srebotnik battled Wang Yafan and Liang Chen.

The Chinese pair took the opener 7-6.

And the team from China would go on to upend the fifth seeds in straight sets, claiming the second frame 6-3 to advance to the next round.