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Every player prop on tonight’s slate, priced against the market’s own fair estimate, what the sportsbooks’ prices imply once their built-in margin is removed. The board is ordered on how the posted price compares to that estimate, so the ordering is the market’s number rather than a Parlay Builder prediction about which bets win. Each row also shows how often the player has cleared the line recently and over how many games, and which way the trend is moving. A fair price needs at least two books quoting both sides of a line, so on the props where fewer do there is no figure and the row says so. No account needed to browse: the top 3 are shown in full, and the rest of the board stays blurred until you upgrade.
By the market’s own fair price. Where at least two sportsbooks quote both sides of a line, their prices are de-vigged (the built-in margin taken back out) and the median across those books is what the market implies the prop is worth. The board is ordered by how the posted price compares to that figure. It is the market’s number, not a Parlay Builder prediction about which props will win, and about half the board has no fair price because fewer than two books quote both sides; those props rank last rather than being scored zero. Every prop is also measured against the player’s own game log: how often they cleared that line, over how many games — and shown with a letter grade, but neither the grade nor that measured edge decides the order. A prop only reaches the ranked board at all if it clears a minimum edge, a minimum grade, a ten-game sample floor and a price the book has confirmed recently; the rest of the slate is in Market Watch below with the reason.
It is the gap between the measured hit rate and the probability implied by the price you are being offered, after shrinking for sample size and with the sportsbook’s margin left in. A +2% edge means the history has been slightly ahead of that price. It is a description of what has already happened, not a prediction and not a guarantee. Most of a well-priced board sits near zero, and a large number is more often a stale price than an opportunity.
Because props are scored from live sportsbook lines, and a prop only exists once a book has priced the game. Between a slate finishing and the next one being posted there is a real window with nothing to show. The board also refuses to pad itself: if nothing on tonight’s slate clears the bar, it says so rather than filling the space with the least-bad options.
It is the board a prop builder starts from. Pick a league and a market and every prop the books have posted is here with the player’s measured hit rate, the number of games behind that rate and the live price beside it; open any player to build the selection out with a different line, a different side, the splits and the game log. There is no charge for that and no account is needed to browse it.
No. Browsing the board and reading hit rates and live odds needs no signup. The top 3 ranked props are open to everyone, with or without an account; the rest of the board comes with the 7-day trial or a paid plan. An account also adds a daily allowance of AI actions: chat, parlay builds and slip reads out of one shared budget.
No. We do not beat the closing line and do not claim to. We measure the market's fair price and show the history behind every number; if a tool tells you it beats the book, ask to see the measurement. Ours: across roughly 96,000 graded props the model tracked the de-vigged consensus across five books to within the margin those books charge, and no configuration tested cleared it. Historical testing showed that calibration alone is not enough to overcome sportsbook pricing, so the board is built to do the things that hold up: line-shop seven books, score every prop the same way against real history, and show the sample behind each number, in seconds rather than an evening.
Odds and lines come from licensed data feeds and refresh on a schedule; hit rates, edges and grades are Parlay Builder’s own calculations.