Mikaela Shiffrin finishes with no individual medals at Beijing Olympics after crashing out in last event

U.S. skier Mikaela Shiffrin tallied her third did-not-finish (DNF) of the Beijing Olympics on Thursday after she crashed out during the women's combined competition, capping off a disappointing individual performance at this year's Winter Games. 

Shiffrin started strong in the downhill, but skied out during the slalom part of the combined event. She attempted to explain what went wrong in a post-race interview with NBC Sports. 

"I don't know if it was some combination of like driver error, maybe a small little track in the snow and maybe you can't see it and I just didn't react quick enough or whatever it was, but I don't know," she said Thursday.