CLV When Both Number and Price Move

Player props often move in two dimensions: the number changes, AND the price changes. This creates a more complex CLV scenario that many bettors misunderstand.

A Real-World Example

At first glance, it looks like you got positive CLV—the line moved from 8.5 to 9.5, meaning you secured an extra full rebound of cushion compared to the closing line.

You're thinking, "I got the better number!"

But did you actually get positive CLV?

The answer depends on whether your bet has more expected value than the closing line—even after accounting for both the number move and the price move.

Using a Model to Compare Expected Value

Rebounds are a count statistic (0, 1, 2, 3, ...), which makes them well-suited for a Poisson distribution. We can use this to calculate the probability of each outcome and compare the expected value of your bet versus the closing line.

Step 1: Set Your Projection as Lambda (λ)

In a Poisson distribution, λ (lambda) represents the expected value—in this case, your projection of 10.7 rebounds.

Step 2: Convert Each Bet Into a Probability Statement

Because rebounds are integers, we need to calculate:

• Over 8.5 = Player gets 9 or more rebounds = P(X ≥ 9)
• Over 9.5 = Player gets 10 or more rebounds = P(X ≥ 10)

Using the Poisson formula with λ = 10.7:

Step 3: Convert Odds to Break-Even Probabilities

This means your Over 8.5 at -170 needs to hit more than 62.96% of the time to be +EV. The Over 9.5 at +105 needs to hit more than 48.78% of the time.

Step 4: Calculate Expected Value for Each Bet

For -170 (you win $0.588 per $1 risked):

EV = (0.7403 × $0.588) - (0.2597 × $1.00)
EV = $0.436 - $0.260
EV = +$0.176 (+17.6% EV)

For +105 (you win $1.05 per $1 risked):

EV = (0.6261 × $1.05) - (0.3739 × $1.00)
EV = $0.657 - $0.374
EV = +$0.283 (+28.3% EV)

Step 5: Compare and Interpret

Even though you got a better number (8.5 vs 9.5), the closing line at Over 9.5 +105 has significantly higher expected value (+28.3%) than your bet at Over 8.5 -170 (+17.6% EV).

The Trap: Assuming "Better Number" = Positive CLV

This is the trap many bettors fall into: they see the number move in their favor and assume they got good CLV. But when the price moves dramatically in the opposite direction, you need to do the math.

When This Commonly Happens

• Alt lines that juice up quickly: You grab Over 6.5 at -105, it closes at Over 7.5 at +130
• Early morning props: Numbers are low but juice is heavy
• Injury news props: Line moves aggressively but price sweetens

The Decision Framework

When both number and price move, ask yourself:

1. What is my true probability estimate for each line?
2. What is the break-even probability at each price?
3. Which bet has higher expected value given my projection?

If the closing line has higher EV than your bet (based on your projection), you got negative CLV—even if you got a "better number."

Visual Summary

YOUR BET                          CLOSING LINE
---------                         ------------
Over 8.5 at -170                  Over 9.5 at +105

Better Number ✓                   Better Price ✓
(1 rebound cushion)               (+105 vs -170 = huge)

True Prob: 74%                    True Prob: 63%
Break-Even: 63%                   Break-Even: 49%
Edge: +11%                        Edge: +14%

EV: +17.6%                        EV: +28.3%
                                  ← WINNER