The 33-year-old Czech, who is 10 years older than her opponent, kept her nerve in the game's biggest moments to claim her 30th career title and ninth WTA 1000 crown

Battling back after a home-invasion knife attack last December that jeopardized her career, two-time Wimbledon winner Petra Kvitova match her top US Open performance and reach the quarter-finals.

Five months after being stabbed during a burglary, Petra Kvitova will provide the French Open with early chills as she makes her return to competition by opening play at Roland Garros.

Two-times Wimbledon champion Petra Kvitova has entered the draw for next month's French Open four months after suffering a serious hand injury, she said on Monday.

Petra Kvitova has regained the use of her racquet hand badly injured three months ago in a knife attack but there is still no date for her return to tennis, her spokesman said on Monday.

Two-time Wimbledon champion Petra Kvitova will need at least three months of rest after surgery to her left hand cut by a knife-wielding burglar on Tuesday, her spokesman said.

The sixth day of the French Open was in full flow even as its greatest champion Rafael Nadal, who has only lost twice at Roland Garros since 2005, exited with injury.

Rafael Nadal remains on course for a 10th French Open title with a straight-sets victory over fellow Spaniard Nicolas Almagro in the second round.