Sportsbet Same Game Multi: How It Works, the Rules and Smarter Legs
Everything punters actually ask about Sportsbet's SGM product: what it is, what happens when a leg fails or a player doesn't take the field, how the pricing penalises related legs, and how to build multis that aren't a donation.
What is a same game multi?
A same game multi (SGM) combines two or more markets from a single match into one bet - for example Storm to win + Harry Grant anytime try scorer + under 44.5 points. All legs must win for the bet to pay. It is the most popular betting product in Australia for a reason: it turns one game into a big-odds proposition.
The key difference from a normal multi is correlation pricing. Because legs within one match influence each other, Sportsbet does not simply multiply the leg odds together - it applies a discount to related combinations. Storm winning and Grant scoring are positively correlated, so the combined price is lower than the multiplication suggests. Our SGM calculator shows you exactly how big that discount is on any multi you build.
How to build an SGM on Sportsbet
What happens if one leg fails - the rules that matter
| Scenario | What happens at Sportsbet |
|---|---|
| One leg loses | The whole SGM loses, regardless of the other legs |
| A player in a try scorer leg doesn't play (late out) | That leg is typically voided and the SGM recalculates at reduced odds, but rules vary by market - always check the market terms on the day |
| Match abandoned | Markets follow the official result where declared; undecided legs void and the multi recalculates or refunds |
| Golden point | Match result legs settle on the final result including extra time unless the market says 80 minutes |
Building smarter SGM legs
The data-driven rules we follow when our model builds SGMs: keep it to 2-3 legs, anchor on the highest-probability outcome (usually the match result or line), prefer positively correlated add-ons (winning team + their hooker or edge forward to score) over uncorrelated lottery legs, and avoid "2+ tries" style high-variance props entirely. Half of NRL games are decided by 12 or fewer points, which makes winning-margin legs harder than they look - the full numbers are in our try scorer and margin framework.
More guides and tools
FAQ
What does same game multi mean?
A multi bet where every leg comes from the same match. All legs must win. Bookmakers price related legs with a correlation discount, so the payout is less than multiplying the individual odds.
What happens if one leg of a Sportsbet same game multi fails?
If a leg loses, the SGM loses. If a leg is voided (e.g. a named player is ruled out before kick-off in markets that void on non-runners), the multi usually recalculates without that leg at reduced odds. The exact treatment is in each market's terms - check before placing.
How many legs can you have in a Sportsbet SGM?
Sportsbet supports large SGMs (well beyond what is sensible - typically up to 25 legs on major markets). More than 3-4 legs is almost always negative value: every leg compounds both the variance and the margin.
Can you do a same game multi on the TAB machine?
TAB offers same game multis through its app and website. In-venue terminals have limited SGM support - the app is the reliable route. See our Sportsbet vs TAB comparison for how the two SGM builders stack up.
Why is my SGM price lower than the legs multiplied together?
Correlation. When legs tend to happen together (favourite wins + favourite's player scores), the bookmaker discounts the combination, because the true joint probability is higher than independent multiplication implies. Our SGM calculator quantifies the discount on your exact slip.