By JOHN MILLERAssociated Press
Riding against opponents who on average are 14 years his junior, 41-year-old American Olympic cyclist Chris Horner could become the oldest-ever winner of 1 of his sport's biggest races, the Tour of Spain.
Horner, known to fans as the "Flying Smile," is in second place, with four stages left.
The man to beat, 28-year-old Italian Vincenzi Nibali, wasn't even a teenager when Horner's professional cycling career began in 1997.
Horner is aiming to put down the same marker as other middle-aged champions like golfer Jack Nicklaus and pitcher Nolan Ryan.
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