Closing line value: did the price move your way after you bet?
The price you got, against the last price before the game started — a faster read on your betting than a week of wins and losses.
Intermediate · 2 min read
The short answer
- Beating the close means you got a better number than the market settled on; falling short means you were late.
- Getting the better number again and again is the earliest honest sign your approach is working.
- It's a long-run measure: bets that beat the close still lose, so read it over hundreds of bets — averaging 1–2% better is a strong result.
The two prices you compare
Every bet has a final price, set in the last moments before the game starts — the closing line. Closing line value (CLV) is the gap between the price you took and that closing price.
Say you take an underdog at +3.5 and the number is +2.5 by the start: you hold a better number than anyone betting at the close, because the price moved toward your side after you were already in. Had it closed at +4.5, you took the worse of the two.
Why it says more than wins and losses
In the hours before a game, money and news pour in and the price settles. That makes the closing price the most accurate single estimate available of each side's real chance. Beating it regularly means you were getting to the better number before everyone else.
Wins and losses take a long time to tell you anything — a good bettor can lose for weeks. This settles down far faster. It is still a long-run measure, not a verdict on one bet: plenty of bets that beat the close lose. Read it over hundreds of bets, where averaging 1–2% better than the close is a strong result.
Common mistakes
- Judging it one bet, or one week, at a time — you can beat the close and lose, or win a week on poor prices.
- Never writing down the closing price, so you can't tell either way.
Common questions
How do I work this out for my own bets?
Log the price you took and the last price before the start, then compare the two. Parlae does that for you on any play you save.
Does it work on bets about one player's stats?
Yes, but the final price on a player's points or yards jumps around far more than the price on the game itself, so you need many more bets before the number means anything.