Rennae Stubbs says what she really wishes Coco Gauff would start doing after watching her hit 23 double faults in Canada

After watching Coco Gauff hit a staggering 23 double faults during her match in Canada, tennis expert and former player Rennae Stubbs didn’t hold back on what she really thinks the young star needs to change—and fans are nodding in agreement.

Stubbs, who’s been both a coach and a commentator, was clearly concerned about Coco’s serve, especially considering how talented and promising the 20-year-old has been on tour. During her commentary, Stubbs shared what many fans have been thinking: Gauff’s serve is becoming too big of a weakness, and it’s time for a serious fix.

“She has to make a change,” Stubbs said. “The serve is not working. You can’t keep doing the same thing and expect a different result.” And honestly, she has a point. Serving is one of the most important parts of the game—it’s the only shot a player has complete control over. If you’re giving away points with double faults, especially over 20 in a single match, it’s almost impossible to win consistently.

Stubbs made it clear she’s not criticizing Gauff just to be harsh. In fact, she praised Coco’s work ethic, her maturity, and her overall game. But like a coach or mentor who genuinely cares, she wants to see Coco live up to her full potential—and that means being bold enough to admit when something isn’t working.

She suggested Gauff should consider rebuilding her serve completely, even if that means going back to basics or taking inspiration from other players who’ve reinvented their game to overcome similar issues. Stubbs believes Coco has all the tools to be one of the greatest, but she needs the confidence that comes from knowing her serve won’t betray her at crucial moments.

What fans loved about Stubbs’ comment was that it came from a place of care and belief. She’s been in the tennis world long enough to recognize greatness—and she sees it in Coco. But as we all know, talent alone isn’t enough. It takes courage to admit something isn’t working, and even more courage to fix it.

Let’s hope Coco takes the advice in stride. She’s still young, she’s already a Grand Slam champion, and the tennis world is definitely rooting for her. With a stronger serve, there’s no limit to how far she can go.