![February 22, 2018: Frances Tiafoe, from USA, plays a backhand against Juan Martin del Potro, from Argentina, during the 2018 Delray Beach Open ATP professional tennis tournament, played at the Delray Beach, February 22, 2018: Frances Tiafoe, from USA, plays a backhand against Juan Martin del Potro, from Argentina, during the 2018 Delray Beach Open ATP professional tennis tournament, played at the Delray Beach,](https://l450v.alamy.com/450v/2nxgcxt/february-22-2018-frances-tiafoe-from-usa-celebrates-as-he-wins-the-first-set-in-a-close-tie-break-against-juan-martin-del-potro-from-argentina-during-the-2018-delray-beach-open-atp-professional-tennis-tournament-played-at-the-delray-beach-stadium-tennis-center-in-delray-beach-florida-usa-frances-tiafoe-won-7-6-6-4-6-7-5-mario-houbencsm-cal-sport-media-via-ap-images-2nxgcxt.jpg)
February 22, 2018: Frances Tiafoe, from USA, plays a backhand against Juan Martin del Potro, from Argentina, during the 2018 Delray Beach Open ATP professional tennis tournament, played at the Delray Beach,
![05 July 2018. The Wimbledon Tennis Championships 2018 held at The All England Lawn Tennis and Croquet Club, London, England, UK. Johanna Konta (UK Stock Photo - Alamy 05 July 2018. The Wimbledon Tennis Championships 2018 held at The All England Lawn Tennis and Croquet Club, London, England, UK. Johanna Konta (UK Stock Photo - Alamy](https://c8.alamy.com/comp/R9YNEW/05-july-2018-the-wimbledon-tennis-championships-2018-held-at-the-all-england-lawn-tennis-and-croquet-club-london-england-uk-johanna-konta-uk-R9YNEW.jpg)
05 July 2018. The Wimbledon Tennis Championships 2018 held at The All England Lawn Tennis and Croquet Club, London, England, UK. Johanna Konta (UK Stock Photo - Alamy
![Professional tennis player Alexander Zverev of Germany in practice for 2018 US Open at Billie Jean King National Tennis Center Stock Photo - Alamy Professional tennis player Alexander Zverev of Germany in practice for 2018 US Open at Billie Jean King National Tennis Center Stock Photo - Alamy](https://c8.alamy.com/comp/PFR1JA/professional-tennis-player-alexander-zverev-of-germany-in-practice-for-2018-us-open-at-billie-jean-king-national-tennis-center-PFR1JA.jpg)