![Grand Slam Champion Simona Halep of Romania wears custom Nike tennis shoes during her 2018 US Open first round match at National Tennis Center Stock Photo - Alamy Grand Slam Champion Simona Halep of Romania wears custom Nike tennis shoes during her 2018 US Open first round match at National Tennis Center Stock Photo - Alamy](https://c8.alamy.com/zooms/6/fdcfaaadbb1b43318fc5c211d02468e1/r2egx7.jpg)
Grand Slam Champion Simona Halep of Romania wears custom Nike tennis shoes during her 2018 US Open first round match at National Tennis Center Stock Photo - Alamy
![José Morgado on Twitter: "Kei Nishikori's new Nike shoes after almost a decade playing with Adidas. [getty] https://t.co/CXQS7g9wQp" / Twitter José Morgado on Twitter: "Kei Nishikori's new Nike shoes after almost a decade playing with Adidas. [getty] https://t.co/CXQS7g9wQp" / Twitter](https://pbs.twimg.com/media/C1N25ToWEAELWGA.jpg)
José Morgado on Twitter: "Kei Nishikori's new Nike shoes after almost a decade playing with Adidas. [getty] https://t.co/CXQS7g9wQp" / Twitter
![Professional Tennis Player Kei Nishikori of Japan Wears Custom Adidas Tennis Shoes during Match at US Open 2016 Editorial Stock Photo - Image of sports, custom: 88874433 Professional Tennis Player Kei Nishikori of Japan Wears Custom Adidas Tennis Shoes during Match at US Open 2016 Editorial Stock Photo - Image of sports, custom: 88874433](https://thumbs.dreamstime.com/z/professional-tennis-player-kei-nishikori-japan-wears-custom-adidas-tennis-shoes-match-us-open-new-york-august-88874433.jpg)