15. Lindsey Jacobellis
Photograph By Joshua Duplechian/ESPN
Lindsey Jacobellis is to boardercross what Kelly Clark is to halfpipe, which is to say she's the most dominant competitor in the discipline. She has more boardercross wins than any other athlete. And though those don't include Olympic podiums, over her career, Jacobellis has a nearly .500 win percentage in FIS races. At X Games, she's 7-for-10. Those are incredible stats in any sport, but especially in one as fickle as boardercross, in which a change in wind speed, a mistimed pass or the misstep of a competitor can mean the difference between first and DNF.