As the lights of the China Open prepare to shine on Beijing’s courts, all eyes are on one of tennis’ brightest stars: Coco Gauff. She won the title last year, defeating the Czech, Karolina Muchova, by 6-1,6-3 in the final. Can she defend her title this year? Time will tell! But this time, it isn’t just her blistering serves or groundstrokes making headlines-it’s the sudden absence of her coach, Gavin MacMillan. What happened to him, and where is he? Finally, Gauff put an end to speculations about her biomechanics coach in the pre-match press conference in Beijing.

This partnership generated significant buzz during the US Open. If we take a look at Gauff’s biggest problem this season, then the first thing that pops up is her serve. She has played around 51 matches this season, but has alre

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