New Gen Spotlight: @stefankozlov just turned 19 and he has been pro since 2013. Born in Macedonia, lives in South FL and often found at our new #NationalCampus, Kozlov goes up against @bradleyklahn at the Tempe Challenger tomorrow. Continue to keep your eyes on this star talent. Have you seen his skills in action yet? #USTA _ #Tennis #TennisPlayer #Instasport #StefanKozlov