Parlay Ledger ?

What to upload

Your sportsbook's "All Bets" export: the .xls file it gives you as-is, or the same columns saved as .xlsx or .csv. Each slip row has a Date Placed; the leg rows under a parlay leave it blank. Any league works — NHL, NFL, MLB or anything else in the file; results are split by league.

Privacy

Nothing is uploaded. The file is read and analyzed by your browser on this page; we never see it and nothing is saved. Loading another file or refreshing starts over from scratch.

What you'll see

• Headline numbers: net profit and ROI, slip win rate, leg hit rate vs. the book's implied probability, longest losing streak.
• You vs. the average bettor: your ROI next to what published sportsbook results say a typical bettor loses with the same mix of parlays and singles (2025 US hold 10.2%, parlay hold about 18.6%, about 4.5% on a −110 straight bet), plus your leg hit rate against a no-edge bettor at your prices.
• How to win more: up to six tips drawn from your file (leg count, same-game pricing, markets winning or losing to their price, over/under lean, long shots, bigger stakes after losses, cash-outs). A tip only appears once there's enough data behind it.
• Parlays vs. straight bets: every leg re-graded as a straight bet. Full stakes each leg at the slip's wager; Split divides the wager across the legs (same money at risk).
• Beating / losing to the number: league + market + Over/Under groups with 15+ graded legs, ranked by edge (hit rate minus implied probability).
• Market table: filter by league, direction and minimum legs, toggle full/split stake, click any header to sort.
• Same-game tax: how far the book's same-game parlay price sits below the product of the leg prices.
• Breakdowns by league, leg price, month, day of week and player, plus cash-outs and your biggest wins.

How it's counted

Implied probability is 1 ÷ decimal price with no vig removed. Voided slips are excluded; voided legs count as pushes. Cashed-out slips count at what you actually got paid, while their legs are still graded on how they finished.