![February 18, 2020: Stefan KOZLOV (USA) serves during his match against Ugo HUMBERT (FRA) at the 2020 Delray Beach Open ATP professional tennis tournament, played at the Delray Beach Stadium & Tennis February 18, 2020: Stefan KOZLOV (USA) serves during his match against Ugo HUMBERT (FRA) at the 2020 Delray Beach Open ATP professional tennis tournament, played at the Delray Beach Stadium & Tennis](https://c8.alamy.com/comp/2EJKGAT/february-18-2020-stefan-kozlov-usa-serves-during-his-match-against-ugo-humbert-fra-at-the-2020-delray-beach-open-atp-professional-tennis-tournament-played-at-the-delray-beach-stadium-tennis-center-in-delray-beach-florida-usa-mario-houbenphoto-by-mario-houbencsmsipa-usa-2EJKGAT.jpg)
February 18, 2020: Stefan KOZLOV (USA) serves during his match against Ugo HUMBERT (FRA) at the 2020 Delray Beach Open ATP professional tennis tournament, played at the Delray Beach Stadium & Tennis
![Tennis player Stefan Kozlov plays at the Midtown Athletic Club Tennis Tournament at Weston Florida on July 5th, 2021 Stock Photo - Alamy Tennis player Stefan Kozlov plays at the Midtown Athletic Club Tennis Tournament at Weston Florida on July 5th, 2021 Stock Photo - Alamy](https://c8.alamy.com/comp/2G6JXFF/tennis-player-stefan-kozlov-plays-at-the-midtown-athletic-club-tennis-tournament-at-weston-florida-on-july-5th-2021-2G6JXFF.jpg)
Tennis player Stefan Kozlov plays at the Midtown Athletic Club Tennis Tournament at Weston Florida on July 5th, 2021 Stock Photo - Alamy
![Stefan Kozlov: From Age-Appropriate Racquet and Florida Rookie Tournaments to ATP Tennis Breakthrough - USTA Florida Stefan Kozlov: From Age-Appropriate Racquet and Florida Rookie Tournaments to ATP Tennis Breakthrough - USTA Florida](https://www.ustaflorida.com/wp-content/uploads/2016/12/20160914_115056-e1481739591118.jpg)
Stefan Kozlov: From Age-Appropriate Racquet and Florida Rookie Tournaments to ATP Tennis Breakthrough - USTA Florida
![KEY BISCAYNE, FL - MARCH 28: Sixteen year old Stefan Kozlov, the world No. 2-ranked junior from Pembroke Pines Florida went for his drivers license in the morning than to the stadium KEY BISCAYNE, FL - MARCH 28: Sixteen year old Stefan Kozlov, the world No. 2-ranked junior from Pembroke Pines Florida went for his drivers license in the morning than to the stadium](https://c8.alamy.com/comp/KPYBHB/key-biscayne-fl-march-28-sixteen-year-old-stefan-kozlov-the-world-KPYBHB.jpg)