The head of Tennis Australia and the acting Victorian sports minister have called on Novak Djokovic to explain why he was given a medical exemption to play in the Australian Open. The tennis player has refused to reveal his vaccination status. Tennis Australia boss Craig Tiley said legally they cannot reveal Djokovic’s medical history or the reason behind the exemption. The state’s acting sports minister Jaala Pulford said the world No.1 men’s player had not been given special treatment and the process to gain an exemption was rigorous