ATP - Washington 07/31 20:00 24 [132] Stefan Kozlov v Yuki Bhambri [200] Retired
ATP - Atlanta 07/25 01:00 25 [133] Stefan Kozlov v Quentin Halys [134] 5-7,6-7
ATP - Atlanta - Qualificação 07/23 15:00 46 [129] Stefan Kozlov v Brydan Klein [226] 6-7,6-2,7-6
ATP - Atlanta - Qualificação 07/22 16:40 45 Stefan Kozlov v Catalin-Ionut Gard 6-3,6-1
ATP - Newport 07/17 18:45 25 [140] Adrian Menendez-Maceiras v Stefan Kozlov [129] 6-2,7-6
Wimbledon - Qualificação 06/28 15:15 45 [175] Dennis Novikov v Stefan Kozlov [126] 7-5,6-2
Wimbledon - Qualificação 06/26 13:15 44 [200] Marc Polmans v Stefan Kozlov [126] 4-6,5-7
ATP - Queens 06/22 11:00 26 [7] Marin Čilić v Stefan Kozlov [149] 6-0,6-4
ATP - Queens 06/20 11:30 25 [25] Steve Johnson v Stefan Kozlov [149] 6-3,1-6,1-6
ATP - Queens - Qualificação 06/18 11:00 46 [75] Pierre-Hugues Herbert v Stefan Kozlov [150] 4-6,2-6
ATP - Queens - Qualificação 06/17 11:20 45 [150] Stefan Kozlov v Kenny de Schepper [148] 6-7,6-3,6-4
ATP - Den Bosch 06/15 09:00 26 [24] Ivo Karlovic v Stefan Kozlov [150] 6-4,6-1
ATP - Den Bosch 06/13 14:35 25 [90] Dustin Brown v Stefan Kozlov [150] 3-6,6-3,3-6
Challenger - Surbiton 06/08 12:10 25 [172] Akira Santillan v Stefan Kozlov [144] 6-2,2-6,6-3
Open de França - Qualificação 05/24 12:45 45 [144] Stefan Kozlov v Sergiy Stakhovsky [122] 7-6,4-6,4-6
Open de França - Qualificação 05/22 14:00 44 [144] Stefan Kozlov v Corentin Moutet [345] 2-6,7-5,6-4
Challenger - Heilbronn 05/15 12:15 25 [146] Tobias Kamke v Stefan Kozlov [145] 6-4,5-7,7-6
Challenger - Savannah 05/05 15:00 27 [342] Joao Pedro Sorgi v Stefan Kozlov [144] 6-2,6-2
Challenger - Savannah 05/04 14:00 26 [217] Ramkumar Ramanathan v Stefan Kozlov [144] 1-6,2-6
Challenger - Savannah 05/02 18:25 25 [424] Mikelis Libietis v Stefan Kozlov [144] 3-6,4-6
Challenger - Tallahassee 04/27 19:15 27 [147] Stefan Kozlov v Mitchell Krueger [180] 4-6,5-7
Challenger - Tallahassee 04/26 19:00 26 [147] Stefan Kozlov v Jurgen Melzer [142] 2-6,6-3,6-4
Challenger - Tallahassee 04/25 23:40 25 [147] Stefan Kozlov v Federico Coria [234] 6-3,4-6,6-4
Challenger - Sarasota 04/20 16:30 26 [137] Stefan Kozlov v Horacio Zeballos [85] 1-6,6-7
Challenger - Sarasota 04/18 15:00 25 [137] Stefan Kozlov v Peter Polansky [128] 6-4,6-4
Challenger - Sarasota - Qualificação 04/17 14:00 54 [137] Stefan Kozlov v Blaz Rola [264] 6-2,4-6,2-6
Challenger - Sarasota - Qualificação 04/16 18:45 46 Stefan Kozlov v Axel Geller 6-1,6-2
Challenger - Sarasota - Qualificação 04/15 19:15 45 Stefan Kozlov v Sathi Reddy Chirala 6-0,6-0
Challenger - San Luis Potosi 04/12 01:30 25 Miomir Kecmanovic v Stefan Kozlov 6-2,7-5
Challenger - Cidade do Panamá 04/03 16:30 25 [120] Stefan Kozlov v Blaz Rola [282] 1-6,6-7

Wikipedia - Stefan Kozlov

Stefan Kozlov (Russian: Стефан Козлов, STEF-ahn KOZ-lov; born February 1, 1998) is an American professional tennis player of Russian descent. He has a career-high ATP ranking of world No. 103 achieved on 18 July 2022 and doubles ranking of world No. 180 on 19 June 2017.

Kozlov made his ATP World Tour debut as a wildcard in 2013 Hall of Fame Tennis Championships at the age of 15. He reached two junior Grand Slam finals in 2014 and finished the year at World No. 3 in the ITF Junior Combined rankings.