Stanislas Wawrinka of Switzerland returns the ball to  David Ferrer of Spain, during their semifinal match of the Monte Carlo Tennis Masters tournament in Monaco, Saturday, April, 19, 2014. Wavrinka won 6-1, 7-6. (AP Photo/Claude Paris)

Monte Carlo Tennis Masters

Stanislas Wawrinka of Switzerland returns the ball to David Ferrer of Spain, during their semifinal match of the Monte Carlo Tennis Masters tournament in Monaco, Saturday, April, 19, 2014. Wavrinka won 6-1, 7-6. (AP Photo/Claude Paris)

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