desperately trying to focus on winning, the ball is now in the australian government's court as it considers canceling his visa once again. we are told the australian government investigation is taking all of those factors into account, the circumstances, the documentation surrounding the positive test. djokovic's behavior in the days following. there is no formal deadline for this government decision. but wolf, the clock is ticking. the australian open is set in just a few hours to announce its formal draw for the competition. djokovic is the number one seed. the government doesn't have to take into account its impact on a major sporting event like this. but the longer it waits, then the greater the chance you're going to see an escalation in the consequences, the fallout, the circus-like atmosphere that continues to surround this whole saga. wolf. >> this is clearly a huge, huge decision they're about to make. could be very, very soon. phil black reporting from