Novak Djokovic and Jannik Sinner both required medical attention in their most recent matches after struggling physically on court. Their timeouts threw off their opponents.

Novak Djokovic was at the centre of another Australian Open row on Monday while defending champion Jannik Sinner needed medical attention in fierce heat to battle into the quarter-finals. Djokovic has been at the centre of controversy before at the Australian Open,

Ukraine’s 30-year-old Elina Svitolina, the wife of celebrated Frenchman Gael Monfils and mother to their two-year-old daughter, Skai, reached the final eight in Melbourne for the first time in six years – “a lifetime ago” – by beating Veronika Kudermetova 6-4, 6-1. As always, she refused to shake the hand of a Russian opponent.