You could also just return on the 10th on a tourist visa with the usual fine print of persuading the delegate you are a temporary visitor etc. etc.
Isn't the first Aussie Open match the 14/1 though? You gonna leave on 15/1?I want to go to the Australian open so unfortunately I can't change those dates. I could arrive on the 10th - how would be my chances of getting a tourist visa? I don't know if high or not, even though I would just stay for a week