‘Distressed’ world No.1 Jannik Sinner struggles in stifling heat during Australian Open fourth-round match
World No.1 Jannik Sinner has struggled in the stifling Melbourne heat before overcoming adversity in his fourth-round match at the Australian Open. The defending champion defeated Holger Rune 6-3, 3-6, 6-3, 6-2 in just over three hours, but there were some scary scenes in the middle of the match.