Jannik Sinner says coach Darren Cahill will retire

Joao Fonseca, Alex Michelsen, Learner Tien and Arthur Fils are four names to remember, following delightful displays during the opening week of the Australian Open.
Lone Aussie Aleksandar Vukic takes on Brit Jack Draper after doubles walkover when Special Ks bowed out injured.
In the Australian Open, Jannik Sinner overcame Tristan Schoolkate in four sets, despite a challenging start. Sinner prevailed ...