Sly Black

Sly Black is one of tennis's greatest developmental coaches, having nurtured 12 world junior champions including Coco Gauff (ages 6-14) and Sloane Stephens (ages 9-13). Four of his protégés reached the top 100, with two winning Grand Slam singles titles. His philosophy emphasizes fun yet disciplined training with focus on solid technique, range of motion, timing, and transitional play. His CoachLife content covers player development psychology, parent engagement strategies, beginner instruction videos, and essential movement skills like adjustment steps.

Players coached

Coco Gauff (WTA 3)

Coached between 6-14 years old

Sloane Stephens (WTA 3)

Coached between 9-13 years old

Victoria Duval (WTA 87)

Sachia Vickery (WTA 73)