![World #5 men's player Kei Nishikori looks at his racquet after a bad shot, during practice at the Hisense Arena in Melbourne, Tuesday, Jan. 13, 2015. The Australian Open tennis tournament, starts World #5 men's player Kei Nishikori looks at his racquet after a bad shot, during practice at the Hisense Arena in Melbourne, Tuesday, Jan. 13, 2015. The Australian Open tennis tournament, starts](https://l450v.alamy.com/450v/2jwy46r/world-5-mens-player-kei-nishikori-looks-at-his-racquet-after-a-bad-shot-during-practice-at-the-hisense-arena-in-melbourne-tuesday-jan-13-2015-the-australian-open-tennis-tournament-starts-next-monday-january-19-aap-imagejoe-castro-2jwy46r.jpg)
World #5 men's player Kei Nishikori looks at his racquet after a bad shot, during practice at the Hisense Arena in Melbourne, Tuesday, Jan. 13, 2015. The Australian Open tennis tournament, starts
![Kei Nishikori Tennis player Shimane Prefecture Australian Open 2018, tennis, sports, april, racquet Sport png | PNGWing Kei Nishikori Tennis player Shimane Prefecture Australian Open 2018, tennis, sports, april, racquet Sport png | PNGWing](https://w7.pngwing.com/pngs/621/418/png-transparent-kei-nishikori-tennis-player-shimane-prefecture-australian-open-2018-tennis-sports-april-racquet-sport-thumbnail.png)
Kei Nishikori Tennis player Shimane Prefecture Australian Open 2018, tennis, sports, april, racquet Sport png | PNGWing
![Japan's Kei Nishikori throws his racquet in despair during his quarterfinal match against Paul-Henri Mathieu of France during the Brisbane International tennis tournament held in Brisbane, Australia, Thursday, January 8, 2009. (AP Japan's Kei Nishikori throws his racquet in despair during his quarterfinal match against Paul-Henri Mathieu of France during the Brisbane International tennis tournament held in Brisbane, Australia, Thursday, January 8, 2009. (AP](https://c8.alamy.com/comp/2P99P8D/japans-kei-nishikori-throws-his-racquet-in-despair-during-his-quarterfinal-match-against-paul-henri-mathieu-of-france-during-the-brisbane-international-tennis-tournament-held-in-brisbane-australia-thursday-january-8-2009-ap-phototertius-pickard-2P99P8D.jpg)