Sportsbook bets here · Kalshi fills → the Kalshi grader
Win rate can be noisy over short samples. We grade a bet you already placed on Closing-Line Value — a market-relative price diagnostic — against the market's de-vigged closing price, from our own multi-book capture. We make zero claim your bet will win. A scorekeeper, not a tipster. No picks, ever.
Your entry finished behind this recorded close. One observation does not distinguish timing, selection, liquidity, or ordinary market movement.
One email a week: where the market is mispricing, new free tools like this one, and our honest data drops — including our misses. Unsubscribe in a click. No picks, ever.
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The closing lines we grade against come from our own multi-book capture — the same raw data in our archives → · Start small: free sample or the $9 MLB matched-book tryout
Grade a bet above and it's saved to a running scorecard — average CLV and how often you beat the close. Saved on our server under an anonymous browser cookie.
CLV is not a profit guarantee. It is one market-relative diagnostic whose usefulness depends on a consistent pregame close, representative sampling, and reliable odds capture. Read the calibration context. We don't sell picks; this only grades bets you've already made.
We grade against the de-vigged closing fair value, so beating it means you beat the market and the vig. Most flat bettors run slightly negative — that's the honest baseline, and exactly what win rate hides.
Beta coverage: MLB · NBA · NHL · NCAAMB · WNBA · NFL · CFB, games since 2026-03-30 (each league while in season). The "closing line" is the last quote before first pitch (Pinnacle preferred, consensus otherwise). We just added a first-pitch cutoff that drops in-play prices from the close — newer grades use it; a few older ones may still reflect early in-game moves while we backfill start times. Your journal is saved on our server under an anonymous browser cookie, not linked to any account; see the privacy policy.