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Why we grade on closing-line value, not win rate

Wins and losses take thousands of bets to mean anything. Beating the close shows up far sooner.

Ryan H. · · 1 min read

Every pick in our record is graded on closing-line value (CLV): how the price you took compares with the fair price just before the game starts. It's the standard serious bettors use, and it's why you won't see us advertise a win rate.

Win rate is mostly noise

A bettor with a real 2% edge at -110 wins about 53.4% of bets instead of 52.4%. Over 200 bets, luck alone moves the win rate by several points either way, far more than the edge. It takes thousands of bets before a win rate says much about skill.

The closing line is the best estimate there is

By kickoff, a sharp market has absorbed the news, the injuries, and the money of the best bettors. Research on betting markets keeps finding that the closing line predicts outcomes better than almost any model. Our own tests on NFL data agree.

So if you regularly bet at better prices than the fair closing price, you're very likely betting with an edge, and that shows up after dozens of bets, not thousands.

How we measure it

  • When you log a pick, we save the price and the fair price at that moment.
  • Just before the game, we take the sharp books' prices, remove the vig, and record the fair closing price.
  • Your CLV is the difference. Beating the close on most bets, by a margin that holds up across a real sample, is the signal to look for.

CLV isn't a guarantee: you can beat the close and still have a losing month. It's the most honest scoreboard we know, so it's the one we show, with the sample size next to it.

The math is the same whichever market you're grading, including a player prop, whose fair price starts from a projection turned into a distribution rather than a single market consensus: save the price you took, record the fair price at the close, and compare the two.

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Try the numbers yourself

Compare the odds you bet with the closing line to see whether you beat the market, and by how much.

Open the closing-line value calculator

See every price at your books against the fair price

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