Free Calculator

Round Robin Calculator

A round robin creates every possible parlay combination from your selections. Enter 3–8 teams with odds, choose your parlay size, and see your total action, all combinations, and what you win at each outcome level.

Parlay Size
Stake Per Parlay ($)
Number of Teams

What Is a Round Robin Bet?

A round robin automatically generates every possible parlay combination from a set of selections. Instead of betting one big parlay that requires every leg to win, a round robin spreads your action across many smaller parlays — so you still profit even if one or two teams lose.

Number of Parlays = C(n, k) = n! / (k! × (n−k)!) Where n = total teams, k = parlay size Example: 4 teams in 2-team parlays: C(4,2) = 4!/(2!×2!) = 6 parlays

Example — 3 Teams, 2-Team Parlays

Teams A, B, C with $10 per parlay stake ($30 total)
3 parlays: A+B, A+C, B+C
If all 3 win: all 3 parlays cash → max payout
If 2 win (say A+B): only the A+B parlay wins → may recoup stake
If 1 wins: 0 parlays hit → full loss of $30
If 0 win: full loss of $30

Round Robin vs Parlay vs Single Bets

A round robin is a middle ground between a single straight bet and an all-or-nothing parlay. It gives you parlay-size upside if all legs hit, while partial wins on 2-of-3 or 3-of-4 legs can still return profit or reduce the loss.

The tradeoff: you wager more total money than a single parlay. A 4-team round robin in 2-team parlays requires 6 × your stake in total action. The additional exposure is the price of the insurance against any single leg losing.

Find the Legs Worth Combining

Sibyl's daily picks include model confidence and edge data for every game — making it easy to identify which picks have enough individual value to combine into a round robin.

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