Overview
- Chair umpire Marija Cicak told world No. 1 Carlos Alcaraz to take off a Whoop bracelet during his match against Tommy Paul, and he complied.
- Jannik Sinner was instructed to remove the same device before facing Luca Darderi and followed the request.
- Several players, including Alcaraz, had worn the tracker in earlier rounds without objection, underscoring uneven on‑court enforcement.
- Grand Slam events bar wearables that can transmit data off court to limit live coaching and reduce betting risks, while ATP, ITF and WTA policies are not fully aligned.
- Players say they seek Whoop’s heart‑rate, sleep and recovery data for post‑match and training analysis, and the company criticized the crackdown, saying the issue is being treated absurdly and that data are not performance enhancers.