Stefan Kozlov is an American professional tennis player of Russian descent. He is the son of Russian parents and his father Andrei is a tennis coach.In 2013, Kozlov made his ATP World Tour debut as a wildcard in Newport at the age of 15. Read More
Stefan Kozlov on Monday night overcame severe second-set cramps on his way to winning the longest match in the Mexican Open history after downing 2014 champion Grigor Dimitrov 7-6(8), 5-7, 6-3. ...