MarketsGlossary
Bet builder
Also known as: Same game multi components, Custom bet
A bookmaker feature that lets a punter combine multiple in-match selections (final result, total goals, anytime goalscorer, cards, corners) into a single same-event multi. Each component's implied probability is multiplied to derive the combined price, with adjustments for correlation. The bookmaker margin compounds across selections — bet builders are higher-margin than equivalent separate bets.