check with the rules from your sportsbook for the answer. here is Bovada's rule If a tournament is shortened or otherwise affected, the official result will be used when settling bets, regardless of the number of rounds played.
The Dead Heat rule - when you have a multi-outcome prop or event where two winners tie. If a "dead-heat" is declared on any event, half the stake is applied to the selection at the full odds and the other half is lost. If more than two "dead-heat", the stake is proportioned accordingly.