What is CLV in sports betting (and why it matters more than winning)
You won the bet. Was it a good one? You don't know. You lost another. Was it bad? You don't know that either. A single result is too noisy to judge a decision. CLV exists for exactly that: it tells you whether you got a good price, whatever happens on the pitch.
The definition in one line
CLV (Closing Line Value) compares the odds you took with the odds on the same bet just before kick-off.
CLV = (your odds ÷ closing odds) − 1
Positive means you got a better price than the market's final one. Negative means a worse one.
Why the closing line
Because it's the best-informed price there is. By kick-off the market has seen the line-ups, the injuries, the weather and everyone's money. Beating that price again and again is hard, which is why it's the clearest sign that your analysis is ahead of the market.
Winning, on the other hand, can be luck for weeks on end. If you want to know whether a system works, look at its CLV before its hit rate.
A real example
In Japan's J1 League on 11 October 2026, our record took "both teams to score: No" in Tokyo Verdy v Sanfrecce Hiroshima at odds of 1.95. At kick-off the same bet paid 1.83.
1.95 ÷ 1.83 − 1 = +6.6% CLV.
Put another way: at 1.95 you only needed to be right 51.3% of the time to break even. At 1.83 you needed 54.6%. Same outcome, cheaper price.
Now the case that confuses everyone. On 9 October, in Fluminense v Coritiba, the record took "both teams to score: Yes" at 2.00, which closed at 1.91: +4.7% CLV. That bet lost.
Was it a bad decision? No. The price was good; the coin landed the wrong way, as it often does near odds of 2. Repeat decisions like that hundreds of times and the results start to look like the price.
What our record says
MatchScan publishes its CLV openly at matchscan.co/api/clv.json. As of 13 October 2026 there are 716 picks with a recorded closing price, average CLV is +2.73%, and 64.9% beat the closing odds.
One historical figure shows why we watch it. Within that same record, the picks that beat the close have returned an ROI of +9.7% so far (464 picks); the ones that didn't, +1.7% (250 picks). Same model, same markets: the price made the difference.
That's what has happened so far, on a sample that is still growing. It is not a promise of future results.
What CLV doesn't tell you
It doesn't guarantee winning. Positive CLV over a small sample can be chance, just like a good result.
It depends on which close you use. A bookmaker with a big margin has a worse close; ideally you compare against the most efficient market you can find.
And it means nothing if the price was recorded badly. Log the odds late or rounded and the CLV is made up.
Frequently asked questions
What is CLV in sports betting? It's the difference between the odds you bet at and the closing odds on the same bet. Positive means you beat the market's final price.
How do you calculate CLV? Divide your odds by the closing odds and subtract 1. Odds of 2.10 that close at 2.00: 2.10 ÷ 2.00 − 1 = +5%.
What is a good CLV? Any positive average held over hundreds of bets is a good sign. An average above +2% is hard to sustain.
Is CLV better than hit rate? For judging a decision, yes. Hit rate mixes skill and luck; CLV isolates the price.
Can I have positive CLV and still lose money? Yes, for a while. Over large samples, sustained positive CLV and a losing record rarely go together.
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