Rafael Nadal of Spain returns the ball to Daniel Gimeno-Traver of Spain at the Rio Open tennis tournament in Rio de Janeiro, Brazil, Tuesday, Feb. 18, 2014.  (AP Photo/Silvia Izquierdo)

Brazil Rio Open Tennis

Rafael Nadal of Spain returns the ball to Daniel Gimeno-Traver of Spain at the Rio Open tennis tournament in Rio de Janeiro, Brazil, Tuesday, Feb. 18, 2014. (AP Photo/Silvia Izquierdo)

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