Round robin calculator

A round robin turns one list of picks into every smaller parlay you can make from it. With 3 picks “by 2s” you get three 2-leg parlays: A+B, A+C and B+C. Each parlay has the same stake. When some legs lose, the parlays made only of winning legs still pay.

Parlays = C(legs, size)
Total risk = parlays × stake per parlay
Payout = sum of every parlay whose legs all won

3 legs at −110, parlays of 2, $10 each.

What is a round robin bet? A set of smaller parlays built from one list of picks. One losing leg only sinks the parlays it’s in, not the whole bet the way it does in a single parlay.

How many bets is a round robin? 4 legs by 2s is 6 parlays, 4 by 3s is 4, 5 by 2s or 3s is 10, 6 by 3s is 20. Your total risk is that number times the stake per parlay.

Is a round robin better than a parlay? It’s less risky, not more profitable. You trade some of the top payout for still getting paid when a leg loses. Every parlay inside still carries the book’s margin on each leg.

What if a leg pushes? Most books drop the pushed leg from each parlay it’s in, so those parlays pay at one fewer leg. Check your book’s rules.