John McEnroe has torn into Coco Gauff – suggesting her “commercials” and brand deals could be affecting her tennis performance.

The former US Open champion was knocked out in the fourth round of the competition this year, showing clear signs of frustration as she made 19 double faults and a total of 60 unforced errors in the match against Emma Navarro. This followed a disappointing performance during the Paris Olympics this summer where she reached the third round before crashing out against Donna Vekic.

Now, McEnroe is calling for change. And the seven-time Grand Slam winner believes Gauff should first reassess her team.

Before her impressive run last summer, she began working with Pere Riba and Brad Gilbert – a decision that proved beneficial for the 20-year-old American. However, Riba has since left the team, reports the Express.

“I don’t know about what is going on in her team, but I suspect there will be changes, that’s my guess,” McEnroe commented. “When she made the change last year and brought in Brad, it spurred her on and she had this great run in the hard court season.”