Overview

• Players at the Shanghai Masters and Wuhan Open suffered visible heat illness, with Novak Djokovic vomiting on court, Jannik Sinner retiring with cramps, and Emma Raducanu and Jelena Ostapenko quitting matches.
• The ATP said player safety is its top priority and that it is actively evaluating an official heat policy, while decisions on weather suspensions currently rest with the on-site supervisor in coordination with medical teams and local authorities.
• Wuhan applied the WTA heat rule, including a 10‑minute break before a third set, partial or full closure of the center‑court roof, and suspending play on outside courts when conditions exceeded thresholds.
• Conditions topped 30°C with humidity reported over 80%, and forecasts pointed to continued oppressive heat through this week’s finals in both cities.
• Holger Rune publicly pressed officials for an ATP heat rule during a medical timeout, as players debated responses ranging from standardized breaks and scheduling changes to calls, like Jessica Pegula’s, for adapting within clear safety limits.