Overview
- The French Tennis Federation is using two wet‑bulb globe temperature (WBGT) sensors at Roland Garros to apply a player safety rule that grants a single 10‑minute break at 30.1°C WBGT and requires play to stop at 32.2°C WBGT.
- Those WBGT readings are taken from devices placed on Court Philippe Chatrier and Court 14 and the FFT says the same thresholds apply to display courts with retractable roofs.
- So far no matches have been suspended for WBGT readings, but players have reported heat symptoms, staff and fans have used ice and sprinklers, and one player, Gabriel Diallo, retired citing the heat.
- Forecasts predict more days with highs near or above the suspension threshold, which could force outside‑court stoppages or roof closures if wet‑bulb readings climb further.
- The FFT policy mirrors long‑standing WTA rules and recent ATP guidance, and the WBGT measure combines air temperature, humidity, sun and wind to give a more accurate estimate of heat stress than air temperature alone.