Coco Gauff 2025 Prediction: Serena Williams' ex-coach makes bold claim about American's Grand Slam chances after off-season training

Serena Williams' childhood coach, Rick Macci, has made a bold claim about Coco Gauff's chances of winning Grand Slams in 2025 following her intensive off-season training. Macci shared his valuable insights to help the American prepare better for the upcoming season.

In 2024, Gauff couldn’t secure any Majors, but she did claim victory at the WTA Finals in Riyadh, defeating Zheng Qinwen. She made history as the youngest player to win the tournament since Maria Sharapova did it in 2004.

On Monday, December 23, Macci shared a post on X (formerly Twitter) about Gauff. He suggested that with the right technical, strategic, physical, and mental adjustments, the 20-year-old could secure Grand Slam victories in the 2025 season.

“Every player will make adjustments in the off season. If those adjustments technically strategically and physically help them MENTALLY then Major League Grand Slam improvement and unwavering belief is on the horizon in 2025. @CocoGauff”

"Coco Gauff will be a multiple-time Grand Slam champion" - Rick Macci

Coco Gauff | Image Source: Getty

Serena Williams' former coach expressed optimism that Coco Gauff would be a multiple-time Grand Slam champion. Her first such title came at the US Open in 2023 when she defeated Aryna Sabalenka in the final in front of her home crowd.

On October 17, Macci took to X to praise Gauff’s incredible athleticism, mentioning her lightning-fast backhand and exceptional fitness. He was confident in her potential, predicting she would win numerous Slams in the future.

“Time dictates greatness. Time never lies. Time is on her side. With her sprinter speed bullet backhand and a backbone made of granite and lets plug in that extreme DNA athletic ability Coco Gauff in Time will Time and Time again be a multiple Grand Slam Champion. @CocoGauff,” he wrote.

A few days later, Macci again took to X to praise Coco Gauff, predicting she would soon become World No. 1. Touching on her attributes, he wrote:

“Her overall quickness is number One. Her make up speed is number One. Her backbone is number One. Her slice serve on the duce court is number One. Coming soon to a court near you Coco Gauff will be number One. @CocoGauff”

Coco Gauff is set to begin her 2025 season at the United Cup, a mixed-gender team event kicking off on December 27 across Perth and Sydney. Following the tournament, she will head to Melbourne for the Australian Open, where she reached the semifinals earlier this year.