# Round robin calculator

> Independent. Not affiliated with, endorsed by or sponsored by Novig.

Canonical: https://novigapi.com/round-robin-calculator
Method checked: 2026-11-12
Interactive tool: https://novigapi.com/round-robin-calculator (prefill with ?a=&b=)

A round robin bets every parlay of a chosen size from a list of legs. Four legs by 2s is 6 parlays; at $10 each that is $60, and if three legs win (-110, +120, -105) it returns $122.23. Novig prices its own parlays through maker RFQs (Novig docs, checked 12 Nov 2026).

## Worked example

Worked example: 4 legs by 2s, $10 each, legs 1-3 win

| Parlay | Price | Pays | Result |
| --- | --- | --- | --- |
| 1 + 2 | +320 | $42.00 | Wins |
| 1 + 3 | +273 | $37.27 | Wins |
| 1 + 4 | +358 | $45.82 | Loses |
| 2 + 3 | +330 | $42.95 | Wins |
| 2 + 4 | +428 | $52.80 | Loses |
| 3 + 4 | +369 | $46.86 | Loses |

```
parlays by k from n legs = n! / (k! (n - k)!)
return = sum over winning parlays of stake x parlay decimal
```

A round robin spreads risk across many smaller parlays, so one losing leg does not lose everything. The cost is that each parlay still compounds the margin of every leg it holds, which makes a round robin expensive at high-vig books.

## How to use it

1. Enter 3 to 8 legs.
2. Pick one or more parlay sizes and the stake per parlay.
3. Untick the legs that lose to see the what-if return.

## Questions

### How many bets is a 4-team round robin by 2s?

Six parlays.

### Is a round robin better than a parlay?

It lowers variance, not the margin. Each parlay inside it carries the vig of every leg.

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