With the Australian Open heading into its final rounds, all eyes are on men’s no.1 tennis player Jannik Sinner. However, Sinner is facing critics within and beyond his sport for a doping scandal that is still being investigated.

Iga Swiatek, a self-described “control freak,” is taking new precautions — including holding on to extra samples of medicine she takes, in case they need to be tested at some point — after a doping case she describes as probably the worst time in her life.

Defending champion and No. 1 seed Jannik Sinner easily dispatches host country's last hope; Ben Shelton takes on-court interviewers to task.

Jannik Sinner and Iga Swiatek were both subject to doping cases last year, which has overshadowed their participation at the Australian Open.

Defending champion Jannik Sinner put any illness worries to bed by crushing home hope Alex de Minaur in a straight-sets rout to tee up an Australian Open semi-final against Ben Shelton. The Italian world number one showed no signs of the health issues that hampered him in his last match to emphatically fly past the eighth seed 6-3,