A running back is listed at 1.5 receptions and 6.5 receiving yards. Two catches for 5 yards would cash the over on catches and the under on yards. Bet both, the thinking goes, and the book has handed you a free shot at a double win.
It hasn’t. This pair can lose twice just as easily, and for most players it is more likely to. Here is every outcome, the math, and a real example from 2025.
Every outcome
Bet $110 to win $100 on each side at −110:
| What happens | Over 1.5 catches | Under 6.5 yards | Net |
|---|---|---|---|
| 0 catches | Loses | Wins | −$10 |
| 1 catch, under 7 yards | Loses | Wins | −$10 |
| 1 catch, 7+ yards | Loses | Loses | −$220 |
| 2+ catches, under 7 yards | Wins | Wins | +$200 |
| 2+ catches, 7+ yards | Wins | Loses | −$10 |
Most outcomes are a split, and a split loses the vig. The pair only makes money through the narrow both-win row, and it has a both-lose row of its own.
The math
At −110 on both sides, the pair breaks even only when the chance of a double win beats the chance of a double loss by about 4.8 percentage points:
For most players, that runs the wrong way. One catch for a decent gain is a lot more common than two or more catches that add up to almost nothing. With illustrative numbers for a pass-catching back, an 8% chance of a double win and an 18% chance of a double loss, the pair loses about $31 for every $220 bet, roughly −14%.
A real example from 2025
Before the Chiefs played the Jaguars on Monday night, October 6, 2025, six major sportsbooks listed Isiah Pacheco at 1.5 receptions and 6.5 receiving yards. At the time, we flagged the pair as an edge.
Pacheco caught 3 passes for 20 yards in Kansas City’s 31–28 loss. The receptions over won and the yards under lost: a split, and the vig was gone. That is a common way for this pair to finish, because two or more catches usually means more than 6.5 yards.
When the lines really do disagree
Sometimes a book’s receptions and yards lines don’t fit together, and one of them is the better bet. The way to find out is to compare the probabilities the prices imply, then bet that side alone. Our guide to structural arbitrage walks through the check.
The same trap shows up in the NBA. Over a player’s points and under his points + rebounds + assists only both win in a narrow band, when he scores plenty but barely rebounds or passes. Most of the time you get a split and pay the vig.
What real arbitrage looks like
Real arbitrage covers every outcome of the same market at prices that add up to less than 100%. If one book offers +105 on a team and another offers +105 on its opponent, each side implies 48.78%, 97.56% in total. Bet $100 on each: one wins $105, the other loses $100, and you keep $5 whatever happens.
Even then, it can break. Books with different house rules may grade the “same” bet differently, limits can stop you from getting both sides down, and obvious pricing errors can be voided. Our NHL rules guide shows how mismatched rules turn an apparent sure thing into two losing tickets, and synthetic hold shows how to spot a market whose best prices add up to less than 100%.
Next: structural arbitrageHow to tell when a sportsbook’s related props really disagree, and which side to look at.Frequently asked questions
Is betting over receptions and under receiving yards arbitrage?
No. Arbitrage guarantees a profit whatever happens. Over receptions and under yards can both win, but they can also both lose, for example on one catch for 10 yards.
When does the over receptions, under yards pair make money?
At −110 on both bets, the pair only breaks even if the chance that both win is at least about 4.8 percentage points higher than the chance that both lose. For most players, one catch for a decent gain is more likely than several catches for almost nothing, so the pair loses money.
What is real arbitrage in sports betting?
Betting every outcome of the same market at different books when the prices add up to less than 100% implied probability, such as +105 on both sides of a game at two books. Even then, rule differences, limits and voided bets can break it.
Related reading
- Structural Arbitrage: When Sportsbooks Contradict Themselves
- What Is Vig? How Sportsbooks Make Money and How to Remove It
- NFL Betting Rules: Overtime, Ties and Player Props
This guide replaces an earlier 2025 post at this address.
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