Alberto Contador ( Tinkoff - Saxo ) attacked several times on the last climb before the short descent to the finish .
Was unable to distance Alberto Contador 's main rival , Valverde , who shaved a couple of seconds Alberto Contador Contador 's overall race lead with a late surge .
Alberto Contador ( Tinkoff - Saxo ) attacked several times on the last climb before the short descent to the finish but was unable to distance his main rival , Valverde , who shaved a couple of seconds off Contador 's overall race lead with a late surge .