Lindsey Vonn's comeback attempt may be in jeopardy after she crashed in training at Copper Mountain, Colo., on Tuesday.
The U.S. Ski Team confirmed that Vonn, who is trying to come back from major knee surgery, crashed Tuesday and is being evaluated.
It is not clear whether she re-injured her right knee. She tore the ACL and MCL in that knee and fractured her tibia in a brutal crash on Feb. 5.
"We have no reason to believe it's anything significant right now," U.S. Ski Team spokesman Tom Kelly told the Associated Press.
Vonn was scheduled to return to competition on Nov. 29 in Beaver Creek, Colo.
In recent weeks she has repeatedly said her right knee is 100% and that she had no pain or swelling after her return to the snow. She went to Portillo, Chile, on Aug. 31 to train on skis for the first time since her injury. She eased back into training in close consultation with her doctor and trainer.
With the start of the Sochi Olympics in 79 days, Vonn, 29, has little time to spare. "I would love to win as many World Cups as possible but my main focus is definitely on the Olympics," she said before the season. "If I start off slow, it's fine I just want to make sure that by the time I get to Sochi that I'm 100% in those events."
The Olympic downhill champion skipped the season-opening giant slalom race in Austria because she wanted more time to train. But since her surgery in February, Vonn has been ahead of schedule in her recovery. She originally expected to be back on snow in November.
She has said this season the Sochi Olympics are her priority. The women's downhill in Sochi is Feb. 12.
At the Vancouver Olympics, Vonn raced despite a severely bruised shin. She won the downhill by more than a half second for the first Olympic medal of her career. She also added bronze in the super-G.
She said the Sochi Olympics would be different because she already has a gold medal. "I feel like the pressure is off," she said two weeks ago. "My childhood dream was to win the Olympics, and I've done that. Everything else is icing on the cake."
Vonn was with boyfriend Tiger Woods on the sideline at the Denver Broncos game Sunday night.
The most successful female ski racer in U.S. history, Vonn has four overall World Cup titles and a U.S. record 59 World Cup victories. She needs just three more World Cup victories to tie Annemarie Moser-Proell's record of 62.