Estonia's Anett Kontaveit clenches her fist as she plays Petra Kvitova of the Czech Republic during their third round match of the French Open. Photo: Michel Euler/AP Photo

PARIS Former world number one Petra Kvitova is out of the French Open after being stunned 7-6 (8-6), 7-6 (7-4) in the third round by Estonia's Anett Kontaveit on Saturday.

Despite saving two match points, the two-time Wimbledon champion Kvitova fell as Kontaveit overpowered her in both tie-breaks.

Meanwhile, US Open champion Sloane Stephens battled past Italy's Camila Giorgi after dropping the first set to win 4-6, 6-1, 8-6.

Sloane Stephens of the U.S. beat Italy's Camila Giorgi to progress to the fourth round of the French Open. Photo: Michel Euler/AP Photo

Kvitova, the Czech eighth seed, trailed 5-3 in the first set and even though she battled to force a tie-break, Kontaveit's punishing ground strokes were too much to handle as the Estonian snatched the advantage.

A consistent backhand gave Kontaveit two chances to serve out the match but Kvitova fought back again in determined rallies, only to run out of steam in the deciding tie-break and a desperate forehand, while facing three match points, landed long and confirmed her exit.

Earlier on Philippe Chatrier, third-seeded ex-champion Garbine Murguruza eased past Australia's Sam Stosur 6-0, 6-2 in 62 minutes to secure her place in the fourth round.

However, in the men's event, French home favourite Lucas Pouille was beaten 6-3, 7-5, 6-3 by Russia's Karen Khachanov.  

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