Jannik Sinner gratefully grasped a large slice of luck, fighting off cramp and American Eliot Spizzirri to reach the fourth round of the Australian Open.
The two-time defending champion was in big trouble early in the third set on a scorching Rod Laver Arena as his legs seized up but, at the same moment, the tournament’s heat stress scale hit five, triggering the closing of the roof and the suspension of play on outside courts.
