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🐦 The Robin · round robins with the math attached

What do you collect if only 4 of 6 hit?

build FDRR-B
Build any round robin and get the answer books never print: the full payout matrix at every hit count, the total outlay, and the break-even line.
1
2
3
by 2sby 3sby 4sby 5s
15 combos · $150 total outlay
Prices carry the vig — the matrix respects it. Payouts shown as a range because it matters which legs hit: worst case assumes your shortest prices win, best case your longest.
What this tool does — and why it matters ▾

A round robin turns a list of picks into every smaller parlay inside it — insurance against needing a perfect night. The catch is that the real math (dozens of combos, ranges of payouts, a break-even line) is impossible to do by hand. The Robin does it all before you risk a dollar.

  • Every combination, built and priced. Up to 8 legs by 2s, 3s, 4s or 5s — each combo's combined odds computed from your actual prices, vig included.
  • The payout matrix. The headline feature: exactly what you collect at EVERY hit count, shown as a worst-to-best range because which legs hit changes the money.
  • The break-even line. The minimum number of winners that covers your whole outlay — marked in gold, the single number that should size your play.
  • Total outlay up front. Six legs by 2s and 3s is 35 separate bets — the Robin totals the damage before the book does.
  • The full ticket list. Every combo with its odds, ready to copy to any book.
  • Every league, forever, offline. Pure math on your phone — no feeds, no login, nothing to expire.