While dancing at a relative's wedding, putting at risk her chances of playing in the French Open, No. 2--ranked Kim Clijsters. The 27-year-old Belgian—who last July battled Serena Williams in an exhibition match just days after Williams cut her own foot by stepping on a piece of glass in a German restaurant—gave new zest to the phrase foot fault when she strained and tore ligaments in her right ankle while cutting a rug at a cousin's nuptials last Saturday night in Brussels. According to early reports, Clijsters could be out for up to six weeks, which would prevent her from competing at Roland Garros, where play begins on May 17. At a time when clear-cut champions are hard to come by in the women's game—the current No. 1, Denmark's Caroline Wozniacki, has never taken a major tournament—the loss of Clijsters, winner of the last two Grand Slam singles titles, is considered especially devastating. She also missed last year's French Open on account of an ankle injury.