Sloane Stephens slams Serena Williams, says they aren't friends

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Sloane Stephens, the 20-year-old tennis star who famously beat Serena Williams at the Australian Open in January, bashed her supposed friend and mentor in an interview with ESPN Magazine's Marin Cogan.

With her mother attempting to interrupt her occasionally, Stephens said that the media had played up her relationship with Williams because they were both black tennis players, adding that the 31-year-old hadn't actually spoken to her since losing in Australia.

After her loss at the Australian Open, Williams tweeted "I made you," in apparent reference to Stephens, which Stephens took as an obvious dig at her.

Stephens, whom Cogan called the "recently anointed future of American tennis," continued to dispute Williams' public image as a mentor to her.

Williams' agent told Tennis.com that she had heard Stephens' comments, but had no response.