Former Australian Open champion Stan Wawrinka says fans should be able to do whatever they want, within reason, because it’s just part of the sport.It comes after Tennis Australia chief Craig Tiley announced that anyone who was being overly negative to Novak Djokovic wouldn’t be welcome at the Australian Open.Novak Djokovic was at the centre of a media frenzy last January in Australia when he was deported from the country due to his covid vaccination status.The Serbian had originally entered the country on an exemption but was detained on arrival and after some legal wrangling and a further appeal, his visa was revoked, and he was forced to leave. At the time, the incident divided the Australian public with …