Closing Line Value, or CLV, is the difference between the odds you took on a bet and the final odds offered just before the match started. If you backed a team at 2.10 and the price drifted down to 1.90 by kick-off, you beat the close — you got a better price than the market's last, sharpest estimate.
Why does this matter more than whether the bet won? Because a single match is mostly noise. A team you correctly identified as undervalued can still lose to a deflected own goal in stoppage time. One result tells you almost nothing about whether your reasoning was sound. The closing line, on the other hand, is the market's collective best guess of the true probability — set by thousands of sharp bettors and the books that move with them. Consistently getting a better price than that line is hard, and it is the single behaviour that research links to genuine long-term profit.
Think of it this way: if you can repeatedly buy at a better price than the most efficient market in the world, you are, by definition, finding mispricings. The wins and losses will sort themselves out over a large enough sample. CLV is the leading indicator; profit is the lagging one.
This is why TipsAudit puts CLV at the centre of its track record instead of a flashy win rate. A 60% hit rate on heavy favourites can lose money. A 40% hit rate at consistently beaten closing lines can print it. We log the price we took before kick-off, never edit it, and measure it against the close. That number — not a highlight reel — is how you tell a real edge from luck.