Lindsey Vonn is flanked by her boyfriend Tiger Woods as she leaves after an alpine ski, women's World Cup downhill, in Val D'Isere, France, Saturday, Dec. 21, 2013. Lindsey Vonn is confident that her latest knee trouble will not stop her from competing at the Sochi Games in February. With boyfriend Tiger Woods watching from the bottom of the slope, Vonn missed a gate in Saturday's World Cup downhill at Val d'Isere as her troublesome right knee buckled under her and gave way. The American was clearly distressed after skiing off course and looked close to tears. She didn't fall but grimaced as she pulled up, clutching her knee. (AP Photo/Giovanni Auletta)Lindsey Vonn will leave out the Sochi Olympics on account of a right knee injury, leaving the Winter Games without one of its biggest stars.