Round Robin Calculator

A round robin splits a group of picks into multiple smaller parlays of a fixed size (usually 2-team or 3-team combinations), instead of one all-or-nothing parlay. If you pick 4 teams and round-robin them by 2s, you get 6 separate 2-team parlays — losing one pick only costs you the parlays that included it, not your entire bet.

The number of parlays equals 'n choose k' — for example, 4 picks round-robinned by 2s gives C(4,2) = 6 parlays; 5 picks by 3s gives C(5,3) = 10 parlays. Each parlay requires its own equal stake, so your total risk is (number of combinations) × (stake per combination).

Each individual parlay combination only pays out if every pick in that specific combination won. This calculator computes every combination's payout (stake × the product of each leg's decimal odds) and sums only the combinations where every included pick actually won.

A round robin trades some of a full parlay's massive payout for much lower risk — since a single loss doesn't wipe out the entire bet, just the combinations that included that pick. It costs more upfront (multiple stakes instead of one) in exchange for that partial protection.