Kei Nishikori beats Ivo Karlovic to defend Memphis title

Kei Nishikori topped Ivo Karlovic to win the U.S. National Indoor Tennis Championships.
Rogelio V. Solis/AP

Nishikori beat Karlovic with a passing shot off his forehand putting up him 5-0 that he celebrated with a fist pump. Then Nishikori finished off the match with a forehand into the corner before Karlovic hit a return long.

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