From bigfooty:
There actually are contingencies for such events:
1. Incomplete Match 33.1 Events Beyond Control of Clubs If any Match is unable to commence or continue or to be completed within the time scheduled for the Match for reasons beyond the control of the Club (which for the purposes of this Regulation 33 includes any Officer, servant, agent or independent contractor of the Club), the following provisions shall apply: Match Not Commenced If a Match is unable to commence for reasons beyond the control of the Club, the General Manager - Football Operations shall endeavour to reschedule the Match so that a result can be obtained. If the Match cannot be rescheduled, each Team shall be awarded two Premiership Points and the Teams’ percentage shall not be adjusted.