It's all over between Coco Gauff and Brad Gilbert!

Brad Gilbert, 63 and former world No. 18, is no longer Coco Gauff's coach. The American, former coach of Andre Agassi, Andy Roddick and Andy Murray, announced this on his X account on Wednesday.

"Thank you to Coco Gauff and the whole team for this absolutely extraordinary summer of 2023 and for these 14 months of incredible teamwork. Coco, at just 20, your future is incredibly bright, and I wish you nothing but continued success to come. I can't wait to start the next chapter of my coaching career."

This decision follows the young American's very disappointing recent results. With defeats in the Round of 16 at Wimbledon and the US Open, and in the third round of the Paris Olympics.

Prior to this, their collaboration had been very fruitful, enabling Gauff to win the US Open 2023, her first Grand Slam title at just 19 years of age, and then to reach world No. 2, her highest ranking to date.