Andy Schleck of Luxembourg, wearing the best young rider's white jersey, , right, looks at Alberto Contador of Spain, wearing the overall leader's yellow jersey, as they climb Aubisque pass during the 16th stage of the Tour de France cycling race over 199.5 kilometers (124 miles) with start in Bagneres-de-Luchon and finish in Pau, Pyrenees region, France, Tuesday, July 20, 2010. (AP Photo/Christophe Ena)The 172 remaining riders have set out on the Tour de France's biggest stage, a make-or-break day for Luxembourg's Andy Schleck if he wants to overcome defending champion Alberto Contador of Spain.


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