French Open 2012: Caroline Wozniacki and Schiavone out

But the 21-year-old Dane fought back from match point down by claiming 10 points in a row before taking the set after a 76 minute battle, forcing the game into a decider.

After a controversial line call went against her at 1-1, Wozniack had a heated debate with chair umpire Poncho Ayala.

"When the ball is clearly out I don't think there should be anything to argue about," she said. "If they cannot see, they should have other umpires on the lines or invent Hawk-Eye on these courts.

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