Overview

• Jannik Sinner retired against Tallon Griekspoor with severe cramping and flew to Montecarlo to rest and undergo medical tests.
• His team indicates the issue was cramping rather than injury, with plans to resume a schedule that includes Riyadh, Vienna, Paris and Turin pending clearance, while Davis Cup participation remains uncertain.
• The ATP told Reuters it is actively evaluating additional measures, including a formal heat policy, stating player safety is a top priority.
• Shanghai matches featured temperatures above 30°C with humidity often 80–90%, contributing to multiple retirements and incidents, including Novak Djokovic vomiting and complaints from several top players.
• Current ATP practice leaves weather suspensions to on-site supervisors, whereas the WTA and the Australian Open already use defined heat protocols, and Sinner’s past case at Paris-Bercy prompted later scheduling changes.