Chris Horner suffers leg fracture

Chris Horner (Astana) can't decide to laugh or cry over the race.

Chris Horner (Astana) can't decide to laugh or cry over the race. (Image credit: Bettini Photo)

 What was previously believed to be a muscle injury has turned out to be more serious for American Chris Horner. Imaging tests have revealed a hairline crack in a bone in his left leg, the Astana team announced Thursday.