Jannik Sinner ‘very sad and disappointed’ as knee injury puts him out of US Open

World No 1 makes ‘difficult decision’ to miss slam ‘New York has a special place in my heart’ Jannik Sinner will miss the US Open with a right knee injury. The world No 1 has not played a match since beating Alexander Zverev last month to successfully defend his Wimbledon title, missing the Masters 1000 events in Canad