Fans wav signs sit behind Kei Nishikori, of Japan, as he towels off between games during his finals match against Ivo Karlovic, of Croatia, at the U.S. National Indoor Tennis Championships, Sunday, Feb. 16, 2014, in Memphis, Tenn. Nishikori won 6-4, 7-6 (0).  The signs read, from left,  "Two consecutive championships", "Nishikori V" and "Nishikori, Win the championship."  (AP Photo/Rogelio V. Solis)

Memphis Tennis

Fans wav signs sit behind Kei Nishikori, of Japan, as he towels off between games during his finals match against Ivo Karlovic, of Croatia, at the U.S. National Indoor Tennis Championships, Sunday, Feb. 16, 2014, in Memphis, Tenn. Nishikori won 6-4, 7-6 (0). The signs read, from left, "Two consecutive championships", "Nishikori V" and "Nishikori, Win the championship." (AP Photo/Rogelio V. Solis)

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