It leaves Sinner battling to recover in time for the US Open singles, which gets underway this weekend. He is the defending champion, having beaten Taylor Fritz in last year's final. He will be desperate to retain his crown but will need to be in top condition in order to stand the best chance of success.

Jannik Sinner insisted on Monday he would be ready to defend ... Sinner was due to partner Katerina Siniakova in the US Open mixed doubles, which gets under way in New York on Tuesday. Sinner did not address his participation in the mixed doubles in ...

Carlos Alcaraz sent a touching message to Jannik Sinner after his rival retired from their Cincinnati Open final after just five games having struggled with illness. Sinner, the World No 1, did not win a game and threw in the towel after just 20 minutes of the match,

Emma Navarro withdrew from the mixed doubles championship at the U.S. Open, but Katerina Siniakova will replace her and partner with Jannik Sinner.

Jannik Sinner has until Sunday afternoon to find a new partner, though his participation is up in the air after reaching the Cincinnati semifinals.