Elina Svitolina delivered a stunning first-set comeback before overwhelming Veronika Kudermetova to reach the Australian Open quarterfinals on Monday, but the Ukrainian did not shake hands with her Russian opponent.
In the men's draw, defending champion Jannik Sinner needed medical attention in energy-sapping heat and overcame a long interruption when he broke the net to reach the Australian Open quarter-finals on Monday.
The top seed again dropped a set before coming home 6-3, 3-6, 6-3, 6-2 against dangerous Dane Holger Rune with both men needing medical attention.
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