The Dark Horse: Levi Leipheimer

35, USA (Astana)

This American veteran finished third in 2007 while riding in support of Contador. He's gotten off to his best start ever in 2009, with overall wins at three stage races in a row—the Tour of California, Spain's Castilla y León, and New Mexico's Tour of the Gila. With all eyes on Armstrong and Contador, Leipheimer will have chances to slip away that few riders of his caliber can enjoy.

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