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Closing Line Value (CLV)

Closing Line Value is the difference between the odds you bet at and the closing line (the final odds before the game starts). It is widely considered the single best predictor of long-term profitability in sports betting.

Why CLV Matters More Than Win Rate

Most bettors obsess over their win-loss record. But professional bettors and sportsbooks both know that CLV is a far better measure of skill. Here’s why:

Short-term results are noisy — You can win 60% over a weekend and still be a losing bettor long-term. Variance in sports betting is enormous.
The closing line is the most efficient price — By game time, millions of dollars have been wagered and the line reflects all available information. It’s the “true” market price.
Beating the close = beating the market — If you consistently bet at better numbers than the closing line, you’re finding value the market missed. That’s the definition of an edge.

The Pinnacle Test

Pinnacle Sports (the world’s sharpest sportsbook) has publicly stated:

“If you consistently beat our closing line, you will be profitable long-term. We don’t need to see your win-loss record — CLV tells us everything.”

How to Calculate CLV

CLV is straightforward to calculate:

Spread CLV (Points)

CLV = Closing Spread − Your Spread

Example 1: You bet Chiefs -3. Line closes at Chiefs -4.5.
CLV = -4.5 − (-3) = -1.5 pts → You got 1.5 points of value ✅

Example 2: You bet Celtics -7. Line closes at Celtics -5.5.
CLV = -5.5 − (-7) = +1.5 pts → You gave up 1.5 points of value ❌

Moneyline CLV (Implied Probability)

CLV = Closing Implied Prob − Your Implied Prob

Example: You bet underdog at +150 (implied 40%). Line closes at +130 (implied 43.5%).
CLV = 43.5% − 40% = +3.5% implied probability edge ✅

What’s a Good CLV?

Any consistently positive CLV is good. The best bettors in the world average around 2-4% positive CLV over large samples. Here’s a rough guide:

Average CLV of +0.5 to +1.0 ptsDecent — slight edge

Average CLV of +1.0 to +2.0 ptsGood — consistent value finder

Average CLV of +2.0+ ptsExcellent — professional-level

Average CLV of -1.0+ ptsNegative — consistently getting bad numbers

How to Improve Your CLV

Bet early — Opening lines are less efficient than closing lines. If you can identify value early, you’ll get better numbers before the market corrects.
Shop for the best line — Different sportsbooks offer different numbers. A half-point difference is huge over thousands of bets. Use our odds comparison tool to find the best available line.
Follow sharp action — When steam moves occur, the line is about to move. Getting in before the move captures CLV.
Avoid betting right before game time — By then, the line is at its most efficient and there’s less value to capture.
Build your own models — Having an independent opinion of what the line should be helps you identify when the market is off.
Track everything — You can’t improve what you don’t measure. Record every bet with the line you got and the closing line.

CLV and Sample Size

CLV becomes meaningful over a large sample. A single bet with +3 points of CLV doesn’t mean much — you might still lose the bet. But over 500+ bets, if your average CLV is consistently positive, you almost certainly have an edge.

This is why professional bettors and sportsbooks trust CLV over win rate for evaluating bettors. Win rate over 100 bets can easily be influenced by luck. CLV over 500+ bets is a much more reliable signal.

CLV on LineMovements.com

Our Analysis page automatically calculates CLV for events we track. You can see:

Average CLV across all tracked events
Positive CLV rate (what percentage of events had positive CLV at open)
CLV breakdown by sport
CLV trends over time

Use this data to understand which sports and bet types tend to offer the most CLV opportunities, and time your bets accordingly.

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