World No. 1 Anna Leigh Waters' fan base includes tennis legend and global pickleball ambassador Andre Agassi.

The eight-time Grand Slam champion was in attendance at the Jenius Bank Pickleball World Championships on Saturday to enjoy the tournament in person.

During a guest appearance on Pickleballtv with Kamryn Blackwood and Matt Manasse, Agassi was asked whether he believes Waters will add a 38th Triple Crown to her resume on Championship Sunday.

There was little hesitation in his reply.

"Oh my gosh, bet against Anna Leigh at your own peril. Did you see her on Wednesday night [in the Celebrity Pickleball Showdown]? She couldn't even lay off Dirk Nowitzki for God's sake. What's up with that? She's running into the stands trying to get the ball back. She can't help herself," praised Agassi. "But with that being said, watching what she's done with Ben, watching what she's done on her own, watching the professionalism that she's brought to enhancing her game is absolutely remarkable. Watching her ball control is like a joke. Watching her court coverage, for her size, is just impressive. It just makes me wish I started this 20 years ago."

Agassi competed alongside Waters in mixed doubles earlier this year at the US Open Pickleball Championships, so he knows first-hand just how talented she really is.

They will be opponents, however, come April 2026 when Pickleball Slam 4 is contested at Seminole Hard Rock Hotel & Casino in Hollywood, FL.

Waters and Genie Bouchard will face Agassi and fellow tennis legend James Blake in a gender doubles showdown for a $1M prize purse.

"I look at it not as a battle of the sexes as much as a celebration of pickleball. I've played with Anna Leigh, I've practiced with her, she's like the GOAT. We may get toyed with, but I know we're going to have a great time celebrating the fact that anybody can get out there and enjoy this game," said Agassi. "I look at it like a celebration of pickleball more than a battle of the sexes."

Click here to learn more about Pickleball Slam 4.