Ever-observant Hall of Fame tennis coach, Rick Macci, has weighed in on one of the game’s brightest young stars, Coco Gauff—and this time his spotlighted target is her serve. The comments come amid ...

Coco Gauff is still having issues with her serve, despite working with a biomechanics expert for almost half a year. Gauff brought in Gavin MacMillan last August, hoping he could help sort out the ...