Orica-GreenEdge Simon Clarke of Australia wins the fourth stage of the Tour of Spain “La Vuelta” cycling race between Barakaldo and Estacion de Valdezcaray August 21, 2012. (REUTERS/Felix Ordonez)

VALDEZCARAY, Spain, Aug 21 (Reuters) – Australian Simon Clarke won stage four of the Tour of Spain on Tuesday while home rider Joaquim Rodriguez took over as race leader.

Germany’s Tony Martin came second to Orica-GreenEdge rider Clarke on the summit finish at Valdezcaray. Kazakh Assan Bazayev was third.

Rodriguez replaced Alejandro Valverde as race leader after his fellow Spaniard crashed 20-km from the summit.

The race ends on Sept. 9.