Closing Line Value (CLV) Tracker

What is Closing Line Value (CLV)?

Closing Line Value measures whether you got better or worse odds than where the line closed at game time. The closing line is considered the most efficient line because it reflects all available information and betting action. Sharp bettors consistently beat the closing line.

Why CLV Matters

Even if individual bets win or lose, CLV is the best predictor of long-term success. A bettor who consistently gets +2% CLV will be profitable over time, regardless of short-term variance. This is why sportsbooks track CLV — bettors who beat the close are the ones they want to limit.

CLV Formula

Example: Beating the Close

You bet a team at -105 (1.952 decimal). The line closes at -115 (1.870 decimal).
CLV = (1.952 / 1.870 - 1) × 100 = +4.4%
You locked in value that the market priced away by game time.

Tracking Your CLV

To properly track CLV, record the odds you bet at and the closing odds for every bet. Over hundreds of bets, your average CLV tells you if you're getting good numbers. A +1-2% average CLV is excellent; negative CLV suggests you're consistently getting bad numbers.