Tools
The same line math behind every read. Convert odds, strip the vig, size a bet honestly, and check whether you beat the close. Every formula is shown and every calculation runs in your browser. Market-neutral: these compute numbers, they do not predict outcomes.
Core math
Odds converter American, decimal, fractional, and implied probability. Type in any field, the rest follow. Open → No-vig / de-vig Strip the book’s vig to a fair implied probability. Handles 2-way and 3-way markets, shows the hold. Open → Expected value (EV) Turn a win probability into a decision. EV per dollar and per stake at the price you are offered. Open → Parlay Combine legs into one ticket: payout, combined true probability, and the total edge if any. Open →
Sizing
Hedge Size a hedge on the other side to lock a profit or cap a loss across two books. Open → Arbitrage Detect a 2-way arb, size both legs, and show the guaranteed profit percent if it exists. Open → Kelly stake Full and fractional Kelly sizing for an edge you actually believe in. As good as your estimate. Open → Bankroll / unit sizing Set a unit as a percent of bankroll, then size any play in units against it. Open →
Edge & proof
Tonight's board, in your inbox before first pitch. Free.
The daily conviction record + yesterday's results. No login, no gate, just the mail.
✓ You're on the list. The daily read lands in your inbox before first pitch.
One email a day: tonight's conviction posts + yesterday's results. No spam. 21+. Unsubscribe anytime.
These are market-neutral utilities. They reduce the vig you pay and size a bet you have already decided on. They are not predictions and not a guarantee of profit. Compare lines across books. 21+ · research, not advice.