Closing line value (CLV), explained
Closing line value (CLV) compares the odds you took with the odds when the game started. If you keep getting better prices than the close, you're very likely betting +EV, long before your win-loss record can tell you.
Why the closing line matters
By game time a market has absorbed the most information and the most money. The closing price, with the book's cut taken out, is the best public estimate of the real chance. Beating it means you got a better price than the best estimate available.
How to calculate CLV
CLV = chance at the close × your decimal odds − 1
You bet +120 (decimal 2.20). At kickoff the fair (no-vig) price is +100, a 50% chance. CLV = 0.50 × 2.20 − 1 = +10%. Whether this bet wins is a coin flip; that you took a 10% better price than fair is not.
CLV vs results
Results take hundreds of bets to separate skill from luck. CLV is visible on every bet, so a few dozen bets say more than months of profit and loss. A bettor beating the close by 2% to 3% on average is in rare company.
CLV and getting limited
Books measure CLV too. Accounts that consistently beat the close get limited quickly, which is why spreading bets out matters (how to avoid limits).
Converge tracks every pick until the game starts and publishes how they've done: see the record.
Questions
What is closing line value in sports betting?
The difference between the odds you bet and the fair odds at game time. Positive CLV means you got a better price than the market's final estimate.
Is CLV a good predictor of profit?
It's the best early indicator available. Over a large sample, bettors who consistently beat the closing line tend to profit, since the close is the most accurate public price.
How do you track CLV?
Record each bet's odds, then both sides' odds at kickoff in a busy market. Take the book's cut out of the closing odds with a no-vig calculator and compare the result with your price.
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Updated 2026-10-26