Same game parlays explained

A same game parlay (SGP), also sold as a bet builder, stacks several bets from one game onto one ticket: Oilers to win, McDavid to record a point, over 6.5 goals. It looks like a normal parlay. It is not priced like one, and that difference is where most of the confusion, and most of the book's edge, sits. This guide explains how SGP odds are built and what they cost, with an illustrative worked example.

Normal parlay vs same game parlay

In a normal parlay the legs come from different games. The result of one has no bearing on another, so the book can multiply the odds: 1.91 x 1.91 = 3.65. Our parlays guide shows that maths.

Inside one game, outcomes move together. That is correlation.

• Positive correlation: if the Oilers win, their best player has probably produced. "Oilers win" and "McDavid 1+ point" tend to happen together.
• Negative correlation: "under 5.5 goals" and "both teams score 3+" pull against each other. Books often block combinations like that outright.

Because of correlation, simply multiplying the legs would misprice the ticket. So every bet builder runs its own pricing model and shows a combined price that is usually shorter than the product of the legs.

What correlation does to the price

Prices and probabilities below are illustrative, chosen to show the mechanics. No book publishes its SGP model.

If the legs were independent, the chance of both landing would be 0.56 x 0.64 = 35.84%, a fair price of 2.79. The simple product of the book prices is 1.70 x 1.50 = 2.55.

Now add the link: suppose McDavid records a point in 78% of the games the Oilers win. The real chance of both is 0.56 x 0.78 = 43.68%, a fair price of 1 / 0.4368 = 2.29.

The lesson: the SGP price is not a discount on the "real" parlay. It is a different calculation, and you cannot check it with a calculator unless you have your own estimate of the correlation.

Where the edge comes from

Three layers stack up on a bet builder:

1. Each leg's margin. Player props and alternative lines tend to carry wider margins than a main moneyline.
2. The correlation adjustment. The book sets it, and it does not tell you how.
3. Leg count. As with any parlay, the edge compounds with every leg. Four- and five-leg builders are where the margin piles up.

There is no regulator figure for SGP margins. Nevada's Gaming Control Board publishes hold by sport, not by bet type: 7.69% of everything bet on sports over the twelve months to July 2026, with its paper parlay-card product at 30.07%. Treat a bet builder as at least as expensive as a regular parlay with the same number of legs.

Rules that decide your ticket

Read the bet builder section of the house rules, especially:

• Player not playing. Some books void the whole SGP if a selected player does not take part; others void just the leg and reprice the rest.
• Overtime. Most SGP legs settle including overtime, but player and period markets may not. NHL games tied after 60 minutes go to a five-minute three-on-three overtime and then a shootout in the regular season, so a "regulation" leg and a "full game" leg on the same ticket can settle on different scores.
• Early payout and cash out. Some books settle a leg early if a team builds a big lead; cash-out on SGPs is often limited. See live betting and cash out.
• Maximum payout. Long builders can hit a book's maximum win per ticket.

A quick sanity check

Before placing a builder, compare it with the single most likely leg on its own. If the main leg is 1.70 and a three-leg builder around it pays 2.40, the two extra legs are adding only about 41% to the price (2.40 / 1.70 = 1.41) while each of them can still lose the whole ticket. Ask whether you would take those extra legs as a separate bet at that price. If not, the single is the cleaner bet.

Books with a bet builder

From our records, bet builders are available at bet365, Sports Interaction, BET99, Betway, Stake, 20Bet and others listed on betting sites. Coverage differs: soccer, NFL and NBA usually get the deepest menus; hockey builders are thinner at some books. Check the review for each book's markets before you sign up.

Using SGPs sensibly

• Keep them short. Two or three legs, priced as entertainment, not as a plan.
• Stake a fraction of a single-bet unit. A two-leg SGP around 2.00 to 3.00 still loses more often than it wins.
• Compare the builder price with singles. If the SGP pays barely more than the main leg alone, the extra legs are not adding much value.
• Watch promos. SGP insurance and boosts change the price but not the structure; the odds boosts guide shows how to value them.

The Lower-Risk Gambling Guidelines suggest gambling no more than 1% of household income a month; set that limit before building tickets. Our bankroll management guide and responsible gambling page have the tools and helplines. For hockey-specific builders, start with the NHL betting guide and the hockey betting page.