Serena Williams crashes out to Srebotnik but Ivanovic advances

Williams, winner in 2002 and the only former champion in the women's draw, always looked second best on Court Suzanne Lenglen as Srebotnik, the 27th seed, claimed her first win over the American in four meetings in 90 minutes.

Feeling the strain: Williams leans over her racket at the net

Shouting the odds: Slovenia's Katarina Srebotnik clenches her fist after winning a point against United States player Serena Williams

Broken twice in the first set, Williams upped her game in the second but the Slovenian made the breakthrough in game nine as a fluffed drop shot from Williams gave her the vital break.

She booked a place in the fourth round for the second time in her career when Williams shoved a forehand wide and she now faces Swiss 10th seed Patty Schnyder or France's Emilie Loit for a place in the quarter-finals.

In another second-round match, top seed Maria Sharapova needed three sets before seeing off Bethanie Mattek on Philippe Chatrier court.

The Russian was a set up when her match was suspended on Thursday evening due
to bad light.

Resuming 3-2 down in the second set, she lost her way and allowed Mattek to
take it to a decider but Sharapova won out 6-2 3-6 6-2.

The new world number one will meet Italy's Karin Knapp, the 32nd seed, in the
third round.

Vera Zvonareva, the 11th seed, became the third Russian to win today when she
prevailed 6-2 6-4 in the second round against France's Stephanie Cohen-Aloro.

Sealed with a kiss: Serbia's Ana Ivanovic celebrates after defeating Caroline Wozniacki

World number two Ana Ivanovic recovered from an error-filled first set to beat Dane Caroline Wozniacki 6-4 6-1 and book her place in the last 16 of the French Open on Friday.

The Serb, who reached the final at Roland Garros last year, will meet unseeded Petra Cetkovska of the Czech Republic for a quarter-final spot.

Beaten: Denmark's Caroline Wozniacki lost to Ivanovic

Both players struggled to hold serve in a poor first set but Ivanovic managed to follow up on her third break to take command of the contest after 52 minutes.

After breaking in the third game of the second set, the second seed showed no mercy against the 30th seed and just beat the 90-minute mark to wrap up victory on her first match point.