![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/KPYBH3/key-biscayne-fl-march-28-sixteen-year-old-stefan-kozlov-the-world-KPYBH3.jpg)
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
![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
![Junior Tennis Player Stefan Kozlov of United States in Action during US Open 2014 Match Editorial Photo - Image of backhand, championship: 64268466 Junior Tennis Player Stefan Kozlov of United States in Action during US Open 2014 Match Editorial Photo - Image of backhand, championship: 64268466](https://thumbs.dreamstime.com/b/junior-tennis-player-stefan-kozlov-united-states-action-us-open-match-new-york-september-billie-jean-king-national-64268466.jpg)
Junior Tennis Player Stefan Kozlov of United States in Action during US Open 2014 Match Editorial Photo - Image of backhand, championship: 64268466
![American Teen Kozlov Finishes Runner-Up for Aussie Open Junior Boys Title | Long Island Tennis Magazine American Teen Kozlov Finishes Runner-Up for Aussie Open Junior Boys Title | Long Island Tennis Magazine](https://longislandtennismagazine.com/sites/default/files/Kozlov.jpg)
American Teen Kozlov Finishes Runner-Up for Aussie Open Junior Boys Title | Long Island Tennis Magazine
![Florida's Kenin, Kozlov Win Orange Bowl Tennis 18s | Category - News | | Nature Coast Tennis Foundation Florida's Kenin, Kozlov Win Orange Bowl Tennis 18s | Category - News | | Nature Coast Tennis Foundation](http://s3.amazonaws.com/ustaassets/assets/651/15/mainfckeditordimension/kenin_exclusive_art_seitz_sonya_kenin_stefan_kozlov_jr_orange_champs.jpg)
Florida's Kenin, Kozlov Win Orange Bowl Tennis 18s | Category - News | | Nature Coast Tennis Foundation
![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)