What is CLV?
Closing Line Value is the difference between the odds at which you placed a bet and the odds at which the same market closed (just before the event started). If you bet 2.20 and the line closed at 2.00, you have +10% CLV. If you bet 1.90 and it closed 2.10, you have -10% CLV.
CLV measures whether you spotted something the market eventually agreed with. Run any specific bet through our CLV calculator.
Why CLV matters more than win rate
Win rate is noisy in short samples. A bettor with a 3% true edge might lose 5 of their first 10 bets purely due to variance. After 100 bets they might be down 8%. After 500 they're probably up. After 5,000 they're definitely up.
CLV reveals edge much faster because it doesn't depend on the random outcome of each bet — only on whether the market eventually moved in your direction. Consistent +CLV over even 50 bets is strong evidence of edge.
How to calculate CLV correctly
The right way: use the closing odds at Pinnacle or another sharp book, stripped of vig. Our no-vig calculator does this automatically.
The wrong way: comparing your odds to your own bookmaker's closing odds. Soft books move their lines for risk-management reasons, not always sharpness reasons. Pinnacle's close is the gold standard.
What CLV looks like in practice
A profitable value bettor typically averages +1.5% to +3% CLV per bet. Sharp pros average +3% to +5%.
If your CLV is hovering around 0% or negative over 100+ bets, you don't have edge — you're paying the bookmaker for entertainment. Adjust your strategy or accept this is a hobby, not a profit center.
Monitor CLV velocity (how fast the line moved from bet to close) with our closing line velocity tool for more nuanced insights.
When CLV lies to you
CLV can mislead in two specific cases: (1) you're betting at the bookmaker that originates the line — like Pinnacle itself — meaning their close incorporates your action; (2) you're betting tiny stakes in highly liquid markets where your bets don't move the line.
For most retail bettors at soft bookmakers, neither caveat applies and CLV is a clean signal.
Bottom line
Stop counting wins and losses. Start tracking CLV. After 100+ bets you'll know whether you have real edge or just luck. Combine with the tipster reality check for full statistical confidence, and use CLV-confirmed edge to size with Kelly criterion.