A same game multi (SGM) is one bet made of two or more legs from the same game, and every leg has to win for it to pay. A ticket might combine a team to win, one of its players to score and the total points. Results in one game move together, so the bookmaker prices the whole ticket as a single bet instead of multiplying the legs, which is why an SGM usually pays less than its legs multiplied.
SGM is short for same game multi. Online, every leg has to go on before the game starts, because the Interactive Gambling Act 2001 allows online sports bets only before an event begins (s 8A(3) and s 10B).
How a same game multi works, leg by leg
- Pick one game and open the bookmaker's SGM builder.
- Add legs from the markets it allows. The builder quotes one price for the whole ticket, and the price changes as you add or remove legs.
- Place the ticket before the start. It pays your stake times that price only if every leg wins, and it settles on the official result.
With illustrative prices for an NRL game, not a real match:
| Leg | Single price |
|---|---|
| Team A to win | $1.60 |
| Team A's fullback to score a try | $2.50 |
| Over 40.5 total points | $1.90 |
| The legs multiplied | 1.60 x 2.50 x 1.90 = $7.60 |
| The bookmaker's SGM price | $5.80 |
$10 at $5.80 returns $58.00 if all three legs win, $18 less than the $76.00 the multiplied legs suggest. Four final scores show how it settles:
| Final score | Fullback scores? | What happened | $10 returns |
|---|---|---|---|
| Team A 26, Team B 18 (44 points) | Yes | All three legs win | $58.00 |
| Team A 20, Team B 16 (36 points) | Yes | The total misses | $0.00 |
| Team A 30, Team B 24 (54 points) | No | The try leg misses | $0.00 |
| Team B 28, Team A 22 (50 points) | Yes | Team A loses | $0.00 |
Two winning legs out of three is still a loss: an SGM has no part payment.
Markets you can combine in an SGM
Each bookmaker decides which markets its builder takes and which combinations it will price. The NSW rule book for bookmakers licensed in NSW to take sports bets says a bookmaker need not quote on every outcome or contingency (Bookmaker Declared Betting Events Betting Rules, clause 4.3.2, checked October 2026). Leg types a builder may offer:
| Leg type | Examples |
|---|---|
| Result | Head to head, or the draw in soccer |
| Line and margin | Team A -6.5, or a winning margin of 1 to 12 |
| Total | Total points or goals, or one team's total |
| Scorer | First or anytime try scorer, goal kicker or goal scorer |
| Player numbers | Disposals, tackles, points, rebounds, shots on target |
| Period | A half or quarter result or total |
A builder will not take legs that contradict each other, such as both teams to win, and it may refuse a leg that sits inside another, such as a player to score two tries beside the same player to score. Legs from different games belong in a standard multi instead. Sports betting explained covers each market type on its own.
Why one game's legs are priced together
Multiplying prices assumes the legs have nothing to do with each other, and in one game they usually do. With illustrative fair chances, the margin taken out, picture 100 games like this one: Team A wins 60, its fullback scores in 36, and both happen in 28. Unrelated legs would land together 60 x 36 / 100 = 21.6 times, a fair price of 100 / 21.6 = $4.63. These two land 28 times, because his tries are part of how Team A wins, so the pair is worth 100 / 28 = $3.57.
That is why the builder prices the ticket as one bet, and why legs that pull against each other, such as Team A to win with Team B's winger to score twice, can price above their legs multiplied. How same game multi odds are calculated works out what a bookmaker's SGM price costs, with the link and the margin separated.
Risk: Betting involves risk. These chances are illustrative, the pair still misses 72 times in 100, and a bookmaker can refuse or re-price any combination. See responsible gambling for limits and support.
Void legs and cancelled games
A leg can fail to settle as written: a player takes no part, or the game is called off or cut short. For a player who takes no part, your bookmaker's terms pick one of three rule types:
- Re-priced: the missing player's leg comes off and the bookmaker prices the legs left together, as a shorter SGM.
- Cancelled: the whole ticket is void and the stake comes back.
- Stands: the leg counts as lost under an all-in rule, the NSW rule book's default unless another basis is agreed (clause 5.1.1).
On the $10 ticket above, a fullback ruled out after you bet could leave you with a re-priced two-leg ticket, your $10 back, or nothing. Teams can change right up to the start, so a late out can come after your bet has gone on.
When the whole game goes, the NSW rule book refunds bets on a game cancelled before it starts or abandoned (5.1.10), and treats one postponed for more than three calendar days as abandoned (5.1.6). In soccer, if a game is called off with no official result, bets already decided, such as a first goal scorer, stand, and the rest are void and refunded (5.2.7.1). How that settles an SGM with some legs already decided is set by your bookmaker's terms. Same game multi rules works a re-priced ticket through and compares other rule books.
Stake-back, saver and boost offers on an SGM
Promotions on SGMs come in a few shapes, and each changes what a ticket is worth on average, not how often it wins:
- Stake back if one leg fails, often called SGM insurance or bonus back: the stake returned, usually as a bonus bet up to a cap, when every leg but one wins.
- A saver token on your account, for a named game or for any SGM: some or all of a losing stake back, under the token's terms.
- An SGM boost: a higher price, or a percentage added to the winnings.
- A bonus bet used as the stake: it pays the winnings only, so $10 at $5.80 returns $48, not $58.
Read the minimum legs, minimum odds, eligible markets, cap and expiry before you build a ticket for an offer, because a void leg can drop it below a minimum. Under the National Consumer Protection Framework, winnings from a bonus bet must be withdrawable with no turnover requirement, though the bonus bet itself is not cash. Same game multi promotions values a refund paid as a bonus bet, and bonus bets on multis works through what a bonus bet keeps on a same game multi.
Risk: Betting involves risk. A saver offer does not stop a same game multi from losing, and a bonus bet that loses pays nothing. See responsible gambling for limits and support.
SGMs in AFL, NRL, NBA and soccer
The same mechanics run through each sport, but the legs that move together, and the rules that settle them, differ:
| Sport | Legs that tend to move together | Check before you bet | Guide |
|---|---|---|---|
| AFL | A team's win or line with its key forward's goals and its midfielders' disposals | A home-and-away game can be drawn, so read how each leg settles a draw | AFL same game multi |
| NRL | A team's line with its wingers' and centres' tries, and the total with several try scorers | Golden point: which legs count extra time | NRL same game multi |
| NBA | A star's points with his team's win and the team total | Overtime: which legs count it | NBA same game multi |
| Soccer | A team's win with its striker scoring, and the goals total with both teams scoring | The NSW rule book settles soccer at the end of normal time, in most cases 90 minutes plus stoppage time (5.2.7.3) | Soccer betting |
How many legs to use, which belong on one ticket and when to skip an SGM are covered in same game multi strategy. If you rate only one leg, a single on that leg is the alternative: an SGM would add legs you have no view on, each with its own margin.
Four SGM mistakes and what they cost
| Mistake | What it costs, on this page's numbers | The fix |
|---|---|---|
| Reading the multiplied legs as the payout | Expecting $76.00 from the $10 ticket when the SGM pays $58.00 | Use the price the builder quotes |
| Treating linked legs as unrelated | Valuing the win-and-try pair at $4.63 instead of $3.57, so an illustrative $3.20 SGM looks 1 - 3.20 / 4.63 = 31% under fair instead of 1 - 3.20 / 3.57 = 10.4% | Ask how often the legs land together |
| Adding a player leg before the team is confirmed | Under an all-in rule a late out loses the leg, and the whole $10 with it | Check the void rule, and wait for the teams where you can |
| Counting on a saver to protect the ticket | The two-leg pair still misses 72 times in 100; a refund only changes what some of those misses pay back | Value the offer before you build the ticket |
Risk: Betting involves risk. Fixing these mistakes changes what an SGM costs on average, and a ticket built without them still needs every leg to land. See responsible gambling for limits and support.
SGM Saver and saver offers on your accounts
SGM Saver is B337's same game multi strategy. On games you pick, it builds and places SGMs for saver or stake-back offers already on your bookmaker accounts, and only after the bookmaker confirms the offer applies. It never creates or claims an offer.
You set its games, its range of combined odds, the most legs in one multi and the player markets for each sport. You can also choose a game's legs yourself, and they are re-priced live when the bet goes on. Same game multi automation walks through a session.
It works at seven bookmakers, on AFL, NRL, NBA and soccer, and its multis go on before the game starts. Its sessions log in to your accounts with the details you supply and run on your own computer, which has to be on, awake and online. It comes with Full Automation: the team sets it up with you, the price and any charges on top are confirmed before you pay, and bets placed through B337 use credits.
Logging in and betting that way may breach a bookmaker's terms, since many restrict or prohibit automated betting and third-party access to an account, and the risk falls on you. Automation can bet far more, far faster, than by hand, so set a deposit limit at each bookmaker before the first session.
For free and confidential support call 1800 858 858 or visit gamblinghelponline.org.au.
Risk: Betting involves risk. A saver offer does not stop a same game multi from losing, and a bookmaker can limit stakes, void bets or close an account under its terms. See responsible gambling for limits and support.