Klara Zakopalova of the Czech Republic returns the ball to Teliana Pereira of Brazil at the Rio Open tennis tournament in Rio de Janeiro, Brazil, Saturday, Feb. 22, 2014. (AP Photo/Leo Correa)

Brazil Rio Open Tennis

Klara Zakopalova of the Czech Republic returns the ball to Teliana Pereira of Brazil at the Rio Open tennis tournament in Rio de Janeiro, Brazil, Saturday, Feb. 22, 2014. (AP Photo/Leo Correa)

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