What is Closing Line Value?

Closing Line Value (CLV) is the difference between the odds you took on a bet and the final closing odds on that market when it settles or the event begins. Beating the close means your price was better than the market's last, most-informed number, and consistently doing so is the single strongest predictor of long-term betting profit that exists. The closing line matters because it reflects all available information: sharp money, injury news, weather and line movement have all been absorbed by the time betting stops. Beating it repeatedly signals you are finding value before the market corrects, which is why professional bettors and books judge skill by CLV rather than by short-term results, where variance can mask a genuine edge for hundreds of bets. Worked example: you back a team at decimal 2.10 (implied probability 47.6%). By kick-off the price has shortened to 1.90 (implied 52.6%). Your CLV is positive: you secured 2.10 on an outcome the market ultimately priced at 1.90. In percentage terms you beat the close by roughly 10%, and the gap between 47.6% and 52.6% is your measured edge on that wager, independent of whether this single bet won or lost. Why it matters: judging yourself on wins and losses over a small sample is noisy, but CLV gives near-immediate feedback on decision quality. Track it across every bet. Line-shopping across bookmakers is the practical way to capture more of it, since the best available price at bet time is what you are comparing against the close.