Tennis - World number one Kerber knocked out by Kvitova in Wuhan

German top seed Kerber saved three set points before a forehand error from Czech Kvitova handed the U.S. Open champion a tense first-set tiebreak.

(Reuters)

But Kvitova, showing the battling qualities that have brought her two Wimbledon titles, fought back to force a decider.

Kvitova, seeded 14th, broke Kerber early in the third set to lead 4-2 and despite struggling with cramp, she held her nerve to convert her seventh match point after three hours and 20 minutes on court.

"At the end I think there is no loser. I did everything today. I was fighting until the end," Kerber told reporters.

Kvitova will face Britain's Johanna Konta in the quarter-finals.

(Reporting by Nivedita Shankar in Bengaluru, editing by Ed Osmond)