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Memphis, TN - February 15 2015: Kei Nishikori(JPN) poses with Kevin Anderson(RSA) prior to the 2015 Memphis Open in Memphis, Tennessee. Photographer Andrew Patron (Photo by Andrew Patron/Icon Sportswire/Corbis via Getty Images)

Memphis, TN - February 15 2015: Kei Nishikori(JPN) poses with Kevin Anderson(RSA) prior to the 2015 Memphis Open in Memphis, Tennessee. Photographer Andrew Patron (Photo by Andrew Patron/Icon Sportswire/Corbis via Getty Images)