If there is a presentation ceremony, bets will be settled in accordance with the official result of the relevant governing body at the time of the ceremony.
If there is no presentation ceremony, bets will be settled in accordance with the official result of the relevant governing body immediately after the event.
The above applies regardless of any subsequent disqualification or amendment to the result (except if an amendment is announced within 24 hours of the initial settlement of the relevant market in order to correct an error in reporting the result).
Unless otherwise stated in the Market Information, if a track or field event is abandoned, cancelled or postponed and not completed within seven days of the scheduled completion date, all bets will be void except for those on markets that have been unconditionally determined.
The Exchange General Rules and Market Information will apply in respect of any category of bets or markets not referred to in the Specific Sports Rules. If there is any inconsistency between the Specific Sports Rules and the Exchange General Rules, the Specific Sports Rules shall prevail. If there is any inconsistency between the Market Information and either the Exchange General Rules or the Specific Sports Rules, the Market Information shall prevail.
See here for the Exchange General Rules.