American Ligety suffers knee injury

The 31-year-old giant slalom specialist has won two Olympic gold medals, in the combined event in 2006 and giant slalom in 2014, and five world titles.

(Reuters)

"We all know ski racing is a dangerous sport but I always thought I could avoid a season ender. Unfortunately today I tore my ACL GS training and am heading home," Ligety said on Twitter.

(Reporting by Ed Osmond in London; Editing by Mark Lamport-Stokes)