Football
The close is usually the last available bookmaker or exchange price before kick-off. One market, one number, taken at a known time. That is the figure betr.pro compares with the odds on your slip.
CLV tracker for UK horse racing and football
Closing line value tracker
A closing line value tracker answers one question: did you consistently take a better price than the market settled at? betr.pro records the price you took, the close, and the comparison across your football and horse racing bets — including Rule 4.
betr.pro is a betting tracker. It does not publish tips, it is not a bookmaker, and it does not promise profit. CLV is a measure of price quality over a sample, not a forecast of returns.
What is CLV?
Closing line value is the gap between the odds you took and the price the market closed at. Back a horse at 5.0 that starts at 4.0 and you have +25% CLV. The bet can still lose. The figure only says you took a better price than the market's final assessment.
That is useful because profit over a short sample is mostly noise. A winning week can be full of poor prices; a losing month can be full of good ones. CLV is the earlier signal. It is not a tip, and it is not a forecast of what you will make.
Football close vs horse racing SP, BSP, and exchange close
The close is not the same number in every sport. Treating them as interchangeable makes the comparison meaningless.
Horse racing
SP is the industry starting price. BSP is Betfair Starting Price. The exchange close is the last traded price before the off. They move for different reasons: on-course money can leave SP away from the exchange. BSP and the exchange close are usually the sharper read because they are money, not a returned industry figure.
Pick one benchmark and keep it. Switching between SP and BSP on the same record will invent an edge that was only a change of ruler.
Rule 4 and CLV
A Rule 4 deduction changes the price you actually struck. A 5.0 bet with 25p off was taken at 4.0. Compare that with a 4.0 close and CLV is 0% — not the +25% the slip still shows. Records that ignore the deduction overstate price quality on every race that had a withdrawal.
betr.pro applies Rule 4 before the CLV comparison. The calculator further down this page does the same. If you need the deduction itself, use the Rule 4 calculator.
How to track CLV
Tracking CLV on a record is three stored facts and a comparison, repeated until the sample is large enough to trust.
Step 1
Import the bet
Upload a bookmaker screenshot, paste a spreadsheet, or enter the bet yourself. The price you took is stored on the record, not inferred later from memory.
Step 2
Record the close
Football uses the last available price before kick-off. Horse racing uses SP, BSP, or the last exchange price before the off — whichever benchmark you judge yourself by.
Step 3
Compare over a sample
Each settled bet gets a CLV figure. The useful number is the average across hundreds of bets, not the one that looks impressive on its own.
How betr.pro tracks CLV on a record
The calculator below works one bet at a time. The product stores the same comparison on every imported bet, then shows the average once the sample is large enough to mean anything.
Import the slip
Screenshot, spreadsheet, or manual entry. The taken price is reviewed before it is saved.
Close and Rule 4
Closing prices are attached to the bet. Rule 4 is applied before CLV is calculated, not after.
Read the sample
Average CLV across the record, not a single headline figure. One bet is not a verdict.
CLV vs ROI
ROI is what happened to the money. CLV is whether the prices were any good. They disagree more often than people expect. A run of winners at poor prices will show a healthy ROI and a weak CLV; a losing month of well-priced bets will show the reverse.
Use both. ROI needs a large sample before it stops lying. CLV converges sooner because it does not wait on results. Neither one is a reason to increase stakes, and positive CLV is not a promise that profit will follow.
SP vs exchange close
For racing, the choice of close is the choice of what you are claiming to have beaten. SP is what most UK bookmakers settle against. The exchange close, and BSP, reflect matched money. A record that beats SP but not BSP is beating a softer number.
betr.pro can measure CLV against SP or BSP. Pick the one that matches how you judge yourself, and leave it there.
Try a single bet
CLV calculator, with Rule 4
Work one comparison now. The same maths runs on every bet you track in betr.pro. No account needed for this tool.
Closing line value
+25.00%
You beat the closing line. The market moved towards your selection after you backed it, which is the clearest single sign that the bet was priced well.
One bet proves nothing — CLV is a signal across hundreds of bets, not a verdict on any single one.
Prefer the calculator on its own page? Open the CLV calculator.
FAQ
Closing line value tracker questions
What is CLV?
Closing line value compares the odds you took with the price the market settled at. Back a selection at 5.0 that closes at 4.0 and you have +25% CLV. It measures price quality, not whether the bet won, and it is not a tip or a profit forecast.
How to track CLV?
Store the price you took, store the close, then compare them on every settled bet. For UK horse racing the close is usually SP or BSP; for football it is the last price before kick-off. Apply any Rule 4 deduction to the taken price first, then look at the average over a sample large enough to mean something.
CLV vs ROI — which should I use?
Both. ROI is what happened to the money. CLV is whether the prices were any good. ROI needs a large sample before it stops lying; CLV converges sooner because it does not wait on results. Positive CLV is not a promise that ROI will follow.
Do Rule 4 deductions change CLV?
Yes. A bet struck at 5.0 with a 25p Rule 4 was effectively taken at 4.0. Compare that with a 4.0 close and CLV is 0%, not the +25% an unadjusted slip would suggest. betr.pro applies the deduction before the comparison, and the calculator on this page does the same.
SP vs exchange close — which should I use?
Pick one benchmark and keep it. SP is the industry starting price; BSP is Betfair Starting Price; the exchange close is the last traded price before the off. They are not interchangeable. BSP and the exchange close are usually the sharper read because they are money rather than a returned industry figure.
Related guide
What is closing line value?
The longer explainer: what CLV can and cannot tell you, and when it is worth adding to a record.
Calculator
CLV calculator
One bet, taken price against close, Rule 4 optional. The same calculation this page embeds.
Track CLV on the full record
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