Stefan Kozlov had an impressive junior career in which he reached two junior grand slam finals. He reached a peak ITF ranking of world number 3. Kozlov is of Russian descent and is coached by his dad Andrei, who owns a tennis academy in Pembroke Pines.

Due to his ranking, Kozlov has been mostly playing Challenger tournaments. He won his first Challenger title in Columbus in 2021. His idols while growing up were Roger Federer and Andre Agassi. He is a fan of the Miami Dolphins NFL team. His sponsors are Nike and Head.

Stefan Kozlov’s Sponsors

Nike

Kozlov has a clothing and shoe sponsorship contract with Nike.

Head

Kozlov has a racquet sponsorship contract with Head. He has been using Head racquets since his junior days.