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Calculate all parlay combinations from your selections and see total stake, max payout, and individual combo odds.
A round robin is a series of smaller parlays constructed from a larger set of selections. Instead of placing one large parlay where all selections must win, you spread your stake across every possible combination of a chosen size. This means a round robin can return partial profit even when some selections lose — the key advantage over a straight parlay.
For 4 selections (A, B, C, D) with 2-leg parlays, you get C(4,2) = 6 parlays: AB, AC, AD, BC, BD, CD. If you stake $10 on each, total stake = $60. If three of your four selections win (say A, B, C win; D loses), you win three parlays (AB, AC, BC) and lose three (AD, BD, CD) — partial return rather than total loss.
The tradeoff: round robins cost more than a single parlay and return less than a single parlay if all legs win. A 4-team straight parlay at $60 would return much more than six 2-leg parlays at $10 each, because the straight parlay compounds all four odds together. The round robin trades maximum return for resilience — it survives one or two losers in the set.
When to use round robins: when you have 4–6 confident selections and want protection against one upset. If you have 4 selections where each is 60–65% probability, a straight parlay has only 12–18% probability of hitting. A 2-leg round robin can return profit even with a 2-out-of-4 hit rate, significantly changing the variance profile of the same selections.
Number of Parlays = C(n, k) = n! / (k! Г— (nв€’k)!)
n = number of selections
k = legs per parlay
Total Stake = C(n, k) Г— Stake Per Parlay
Max Payout = ОЈ(Payout of each parlay combination)
Example: 4 selections, 2-leg, $10/parlay
Combos: C(4,2) = 6 в†’ Total Stake: $60
If odds 1.80, 2.10, 2.50, 1.65:
AB: 1.80Г—2.10 = 3.78 в†’ $37.80
AC: 1.80Г—2.50 = 4.50 в†’ $45.00 ... etc.A round robin bet takes multiple selections and creates every possible parlay combination of a chosen size. For 4 selections with 2-leg parlays, you get 6 different 2-team parlays. Each is bet independently, so some parlays can win even if other selections lose.
A parlay requires all selections to win for any return. A round robin distributes your stake across all possible parlay combinations, so partial wins are possible. Round robins cost more but are more forgiving — one loser doesn't wipe out the entire bet.
3–6 selections is the practical range. With 3 selections and 2-leg size, you get 3 parlays — manageable. With 7 selections at 2-leg, you get 21 parlays — total stake can become large. The sweet spot for most bettors is 4 selections with 2-leg parlays (6 combos).
When your selections each have genuine edge (positive EV) and you want to reduce the variance of backing them all in a straight parlay. If each of 4 selections has a 60% win rate, a straight parlay hits 13% of the time. A 2-leg round robin is profitable if any 2+ selections win (hitting ~82% of the time with 60% per leg).