Jannik Sinner News Conference: Addressing positive tests, shakeup to his staff, ESPN

World No. 1 Jannik Sinner addresses the media ahead of the 2024 US Open about the report of his two positive tests for a banned substance in March, the investigation that led to no suspension for him but parting ways with fitness coach Umberto Ferrara and physiotherapist Giacomo Naldi. Subscribe to ESPN+ Get the ESPN App: Subscribe to ESPN on YouTube: Subscribe to NBA on ESPN on YouTube: Watch ESPN on YouTube TV: