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

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.

She's not said one word to me, not spoken to me, not said hi, not looked my way, not been in the same room with me since I played her in Australia. And that should tell everyone something, how she went from saying all these nice things about me to unfollowing me on Twitter. [Her mother tries to interrupt.]

Like, seriously! People should know. They think she's so friendly and she's so this and she's so that -- no, that's not reality! You don't unfollow someone on Twitter, delete them off of BlackBerry Messenger. I mean, what for? Why?

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.

For the first 16 years of my life, she said one word to me and was never involved in my tennis whatsoever. I really don’t think it’s that big of a deal that she’s not involved now. If you mentor someone, that means you speak to them, that means you help them, that means you know about their life, that means you care about them. Are any of those things true at this moment? No.

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