Bet Builder — also called Same Game Multi, Same Match Multi or simply a Multi — is one of the fastest-growing bet types in Irish sports betting. It allows you to combine multiple selections from the same game into a single bet, creating a customised wager that reflects your specific view of how the match will unfold. Want to back a home win, both teams to score, and a named player to score in the first half? One bet. This guide explains how it works, how the price is set, and the important maths behind what looks like a simple feature.
What Is a Bet Builder and How Does It Work?
A Bet Builder lets you select multiple outcomes from the same match and combine them into a single bet with multiplied odds. Standard accumulators require each leg to be from a different event; a Bet Builder removes that restriction, allowing all selections from one game.
Typical football Bet Builder combinations:
- Home win + over 2.5 goals + both teams to score
- Draw at half-time + home win full-time + over 1.5 goals
- Named player to score anytime + team to win + over 9 corners
- First goalscorer + correct score + both teams to score
The minimum number of selections is usually 2; most bookmakers allow up to 8–12 selections in a single Bet Builder. All selections must win for the bet to pay out — one failed leg and the entire bet loses, just like a standard accumulator.
How Is the Bet Builder Price Calculated?
This is the crucial technical point. In a standard accumulator, you simply multiply the decimal odds of each leg together. In a Bet Builder, you cannot do this directly, because the selections are correlated — the outcomes influence each other.
Consider: home win (1.5 decimal) combined with both teams to score (2.0 decimal). If you simply multiplied these, you get 3.0. But a home win makes it less likely both teams scored (since the away team scoring makes a draw or away win more probable). These events are negatively correlated — they tend not to happen together as often as independent multiplication would suggest. The bookmaker's model accounts for this, and the resulting price will typically be lower than the simple multiplication.
Conversely, some combinations are positively correlated: a home win and over 2.5 total goals are loosely positive (high-scoring games favour the stronger home side). The price adjustment in this direction is smaller. The net effect: bookmakers use Bet Builder correlation adjustments almost always in a way that benefits them. The effective margin on Bet Builders tends to be higher than on standard singles or multi-event accumulators.
Bet Builders on Non-Football Sports
Bet Builders are increasingly available across sports. For rugby: first try scorer + winning team + number of penalties. For tennis: first set winner + total sets. For GAA football: first scorer + winning margin. For golf: tournament leader at 36 holes + top-10 finish. The selections available vary by bookmaker and by the volume of their data feed for that sport.
Bet Builder Strategies and Common Mistakes
The most useful application of a Bet Builder is when you have a specific, coherent view of how a match will develop — not just piling in selections to increase the odds. A Bet Builder that reflects a single thesis (this is going to be a high-scoring home win) is more rational than one that includes conflicting selections selected for odds value alone.
Common mistakes: selecting too many legs (every additional leg multiplies the probability that one loses, exponentially); selecting conflicting outcomes without realising it (home win and away team to score first — these are possible together but have a lower joint probability); and not comparing the Bet Builder price with available combination prices on betting exchanges. 18+ — Gambling Awareness Trust: 1800 753 753, gamblingcare.ie.
Frequently Asked Questions
A Bet Builder lets you combine multiple selections from the same match into a single bet. All selections must land for the bet to win. It is also called Same Game Multi or Same Match Multi.
Bookmakers use proprietary models to account for correlations between selections. The price is not simply multiplied odds — it reflects how outcomes relate to each other, with the adjustment typically favouring the bookmaker.
Because the selections are correlated — a home win and both-teams-to-score happen together less often than their individual probabilities multiplied would suggest. Bookmakers adjust prices downward accordingly.
Many bookmakers offer cash out on Bet Builders. Availability depends on the operator and the specific selections included.
Yes. Rugby, tennis, golf, cricket, GAA and others have Bet Builder options at many bookmakers. The specific selections available vary by sport and operator.