Gavin MacMillan: He Fixed Sabalenka's Serve. Now He's Working With Coco Gauff

Gavin MacMillan: He Fixed Sabalenka's Serve. Now He's Working With Coco Gauff

March 23, 2026 · 1h 43m

About this episode

Gavin MacMillan discusses his work transforming tennis serves and his current collaboration with Coco Gauff.

Gavin MacMillan spent years building athletes nobody expected to make it — boxers, hockey players, tennis pros. Then Aryna Sabalenka hired him, and the tennis world started paying attention. In this episode, Gavin breaks down the serve transformation that took Sabalenka from 6 double faults in a single final to 6 double faults across an entire tournament. He explains why 99% of strength coaches in tennis are operating on the wrong principles — and why bigger, faster, stronger is the biggest lie in the sport. He's now working with Coco Gauff. And he has thoughts. 🎾 WHAT WE COVER IN THIS EPISODE → Why conventional weight training is actively hurting tennis players → The Federer "toothpick" principle: how elasticity beats muscle → Sabalenka's serve rebuild — the real story, step by step → What Gavin is working on with Coco Gauff right now → Why you can't think your way through a serve under pressure → The coaching lie: "I played it, so I can teach it" → The broken ATP/WTA system — and why nobody's fixing it → Caro Garcia on what she'd change about her career if she started over → Why tennis is the single hardest sport in the world to succeed in professionally…

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