REDFOO -- front man of musical duo LMFAO and tennis star Victoria Azarenka's boyfriend - has entered a qualifying tournament for the US Open, the US Tennis Association said on Friday. Redfoo has entered the USTA Northern California Sectional Qualifying Tournament in Salinas, California, on June 18-23. The wild-haired Redfoo, who made his name as a rapper, dancer and DJ, has gained quite a profile in tennis thanks to his relationship with Azarenka. He supported her on her run to the Australian Open title in January, where he revealed he had sampled her ear-piercing grunts for a song. The 37-year-old is entered under his given name Stefan Gordy and will play singles and mixed doubles.