A void, and how it differs from a push

A void is a bet cancelled because it never became a valid wager. The stake is returned exactly as with a push, but the cause is different: a push means the bet ran and tied against the line, while a void means the contest, the participant, or the price itself failed a condition the bet depended on. Common causes are an abandoned or postponed event, a named player not taking part, and an obviously erroneous price.

The book is unwinding a contract it can no longer settle fairly, rather than settling one that ended level. That distinction matters because the conditions for voiding are written in the terms and are a source of dispute, whereas a push is simple arithmetic that nobody argues about.

Void rules differ sharply between sports and markets. A player prop where the player is a late scratch is normally void, whereas a team market involving that player is not. Postponements are frequently void only if the event is not replayed within a stated window, which can be 24 hours or several days.

The problem arrives next. The most expensive misunderstanding is assuming a void returns the whole multi-bet stake. It does not — it removes one leg and lets the rest run at a shorter combined price, so a bet placed for a large payout can end up settled at a much smaller one with no way back.

What to do with it. Before betting a market where a participant might not appear, find the void rule for that specific market rather than assuming the general one applies.