Winter Olympic champion Lindsey Vonn was injured during a downhill training run at Copper Mountain on Tuesday.
She was taken to nearby Vail to be examined by orthopedic surgeon Bill Sterett, who performed the right knee ligament repairs on Vonn last February, Denver Post reported.
Vonn had just come back from months of rehabilitation and doctors need 24 hours before they decide whether the injury would threaten the four-time overall World Cup winner's bid for Sochi Winter Olympics next year.
Next week's World Cup event at Beaver Creek includes downhill training on November 26-28 and the season's first women's downhill race on November 29.
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