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Parlays & combos · free · runs in your browser

Round Robin Calculator

A round robin takes a set of picks and bets every parlay combination of a chosen size — 'by 2s' on four picks is all six two-leg parlays — so one missed leg no longer kills the whole position.

Parlays3 × $10.00
Total risk$30.00
Max payout$109.34
Outcomes — every 2-of-3 combination priced
All 3 legs win3/3 combos cash
+$79.34
Leg 1 misses1/3 combos cash
+$6.45
Leg 2 misses1/3 combos cash
+$6.45
Leg 3 misses1/3 combos cash
+$6.45

Single-miss scenarios shown; two or more misses lose every combo containing either leg — the floor is always −$30.00.

Show the math
combos = C(n, k)C(3, 2) = 3
combo return = stake × Π leg decimals (all legs in combo win)

The Scout’s Notebook

What is a round robin bet?

A round robin takes a set of picks and bets every parlay combination of a chosen size — 'by 2s' on four picks is all six two-leg parlays — so one missed leg no longer kills the whole position.

How it works & common questions

Round robins trade ceiling for durability — the max payout is lower than one big parlay, but a 5-of-6 night still pays instead of zero.

How it works

  1. Enter 3–8 picks. Each pick's price, in American or decimal odds.
  2. Choose the combo size. 'By 2s' bets every pair, 'by 3s' every trio, and so on.
  3. Read the scenario board. All-win and every single-miss case, each with combos cashed and net profit.

Is a round robin better than a straight parlay?

A round robin is not better EV — it is the same legs carrying the same vig — but it reshapes the variance: one wrong leg produces a partial return instead of a total loss. Whether that trade is worth the lower ceiling depends on how confident you are across all legs.

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