Original ResearchPublished 9 October 2026Operational margin of high-school tennis tournaments under heat constraints: a wet-bulb globe temperature-based scenario analysisHiroki Yamaguchi · Takaaki Mori · Hiromi Hanano · Kan Oishi · Kentaro Ikeue · Chie Omichi · Kojiro IshiiFrontiers in Sports and Active Livingdoi 10.3389/fspor.2026.1914945