Round Robin Calculator
Calculate how many tickets a round-robin creates, total risk, max payout and partial-win scenarios. This is ticket math only, not a prediction, betting recommendation, legal check, settlement ruling or sportsbook account decision.
What this tool owns
Selection count, round-robin size, ticket count, stake per ticket, total risk, max payout and simple partial-win scenario math.
What it does not own
No same-game correlation model, exact multi-price pricing engine, sportsbook settlement ruling, legal availability, bankroll advice, tax treatment or bet recommendation.
Privacy before input
This calculator runs in your browser. Do not enter ticket IDs, account IDs, SSN, card, bank, document, login or identity data.
Pressure stop
If total risk or max payout makes you want to raise stake, chase losses or deposit again, stop and call or text 1-800-MY-RESET.
Calculate round-robin ticket math
Partial-win scenarios
| Selections that win | Winning tickets | Gross return | Profit / loss |
|---|
Formula registry
| Formula version | Round Robin Ticket Math Model v1.0. |
|---|---|
| Formula | Tickets = nCr(number of selections, round size). Total risk = tickets x stake per ticket. Max payout = tickets x stake per ticket x average decimal odds ^ round size. |
| Exclusions | No exact per-selection pricing, no SGP correlation, no settlement ruling, no legal/account/payout approval and no stake advice. |
| QA fixture | /tools/round-robin/test-fixtures.json |
When this tool stops owning the question
Single parlay
Use the Parlay Calculator for one ticket, offered-price gaps, push/void statuses and evidence packets.
Exposure pressure
Use Bankroll Planner when total risk feels large or stake size is changing.
Settlement issue
Use verification routes when push, void, repricing, boost or support records decide the outcome.
Source registry
| Source / route | Used for | Last checked | Recheck trigger |
|---|---|---|---|
| Internal combination formula | nCr ticket count, total risk, max payout and partial-win scenario math. | May 19, 2026 | Formula, input, export or result-label change. |
| Parlay Calculator | Single-ticket parlay payout, offered-price gap and evidence-packet route. | May 19, 2026 | Sports/parlay owner route changes. |
| Operator terms / accepted ticket | Settlement, push/void, boost, limit, same-game and correlation rules. | Route-owned by operator terms | Any settlement or payout disagreement. |
| National Council on Problem Gambling | Responsible-gambling help route and 1-800-MY-RESET wording. | May 19, 2026 | Helpline, text, chat or state-routing wording changes. |
Maintained and reviewed by
Maintained by The Playbook USA Tools Team.
Review scope: combination formula, total-risk labels, partial-win scenario table, copy/export/share behavior, limitations and responsible-gambling stop-gates.
Round-robin FAQ
Does this predict round-robin profit?
No. It calculates ticket math from the assumptions you enter. Outcomes, line movement, settlement rules and correlation are not predicted.
Why use average decimal odds?
Average odds make the scenario table readable. Exact ticket settlement can differ when every selection has a different price.
Can I use this for same-game selections?
Not as a correlation model. Same-game or related selections can break simple combination assumptions and should be checked against sportsbook rules.
Changelog
May 19, 2026: launched Round Robin Ticket Math Model v1.0 with ticket count, total risk, max payout, partial-win scenarios, copy/export/share, no-JS fallback, fixtures, source registry and RG boundary.