Round Robin Calculator

Break your legs into smaller parlays. See total combos, total risk, and the payout range per size.

Odds format
Legs (4)
1
2
3
4
Combo sizes
Total combos
10
Total risk
$50
Payout per combo
By 2s6×$18–$28
By 3s4×$40–$53
The math, done for every line
EdgeGoat prices every Hard Rock line with its own model, shows its probability next to the book's, and tracks your parlays leg by leg. Free to start.

How to use the Round Robin Calculator

A round robin breaks N legs into every possible smaller parlay of a chosen size — "5 legs by 2s" creates 10 separate 2-leg parlays, each at the same wager. Compared to a single 5-leg parlay, a round robin still lets you cash even if some legs miss, but the total risk multiplies because you're paying for every combo.

Enter your legs and pick which combo sizes you want — by 2s, 3s, 4s, or higher. The calculator shows the total combo count, total dollar risk, and the payout range (best-case to worst-case) for each size based on which legs are mixed.

Round robins are a hedge against one bad leg killing your slip, at the cost of a worse blended price. They make most sense when you have legs of similar value — adding a –300 favorite into a round robin of +130 dogs barely moves the per-combo payout but doubles your risk.

Frequently asked questions

It is the standard combinations formula C(n,k) = n! / (k! × (n−k)!). 5 legs by 2s = C(5,2) = 10 combos. 5 legs by 3s = C(5,3) = 10. By 4s = 5. By 5s = 1.

Related calculators

The math, done for every line
EdgeGoat prices every Hard Rock line with its own model, shows its probability next to the book's, and tracks your parlays leg by leg. Free to start.