Serena Williams debuted a rap song on Friday getting mixed reviews from people on the web.

Williams reportedly recorded the song at B Major Music Group, a record studio in Florida owned by NFL player Bryant McKinnie, according to TMZ.com.

"I ball hard, no tennis racquet/I can see these haters through my Gucci glasses," Williams raps.

The reviews online were mixed.

"We assume that she was simply doing this for fun, in which case...go on girl," MTV's RapFix wrote.

On Twitter and Facebook, some users were even comparing the tennis player with Nicki Minaj.

But some gave harsh critics.

"Why Serena Williams came through with the Lil Mama type flair on the track," a Twitter user wrote.

Check out the Lyrics Here and Listen to the Song After the Jump:
Wait a minute now x4
I ball hard, no tennis racquet/I can see these haters through my Gucci glasses
I make hits like battin' practice/Baby, like, 'Serena, is you really rappin'?'
That's me, thanks for listenin'/schooling all these rappers, they should pay tuition
I make a lot of money but that ain't yo business/you can tell the people I said this
I win, I really mean it/Swag out this world, you should call me Venus
That's my sister, my name is Serena/on the court I serve 'em up, no subpoena
I cook the track up like a frozen pizza/beats so crazy it might blow your speakers
I ain't never been a loser and I'm always on top: roofer

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Serena Williams