Market Line
Free tool · Line check

Is my line still playable?

Lines move after a pick is posted. Enter the posted line and price, the playable-to number if you have one, and what your book is offering now. The checker compares the line and the break-even win rate of each price and tells you whether to bet, bet smaller or pass.

The posted pick

Optional

Your sportsbook now

No playable-to number? Leave it blank and the posted line is treated as the limit.

Bet smaller: still playable, thinner edge

1 pt worse than posted, with 0.5 pts of room left to the limit.

Vs posted line
-1.0 pts
Better (+) or worse (−) for you.
Room to the limit
+0.5 pts
Before the playable-to number.
Your break-even
52.8%
At -112.
Posted break-even
52.4%
Your price needs 0.4% more.

Break-even math only: this checks the number and the price, not the game. "Bet smaller" means the edge is thinner than at the posted number.

Runs entirely in your browser; nothing you type is sent anywhere. For information only: not betting advice. 21+.

The rules the checker uses

  1. Past the limit: pass. The limit is the playable-to number when you have one, otherwise the posted line.
  2. Much heavier price: pass. If your price needs more than 3.5 percentage points of extra win rate to break even (for example -135 against a posted -110), the price has eaten the edge.
  3. Posted number or better, comparable price: bet. Comparable means your price needs at most 1 percentage point more win rate to break even.
  4. Anything in between: bet smaller. A worse line that's still inside the limit, or a moderately heavier price, means a thinner edge, so a smaller stake.

Why the price matters as much as the line

Your break-even win rate at -110 is 52.4%. At -115 it's 53.5% and at -120 it's 54.5%. When a typical edge is a few percentage points, a couple of points of extra juice is a real cost, which is why shopping the price matters as much as shopping the line.

Questions

What is a playable-to number?

The worst line at which a bet is still worth making. If a pick is posted at OVER 150.5 playable to 155, you can bet it anywhere from 150.5 up to 155 (with a smaller edge as the number gets worse), but you pass at 155.5.

How does the checker decide?

First the line: past the playable-to number (or past the posted line if none was given) is a pass. Then the price: it compares the win rate each price needs to break even. A comparable price at the posted number or better is a bet; a worse line that's still playable, or a moderately heavier price, is a smaller bet; a much heavier price is a pass.

How much does the price matter?

More than most bettors think. At -110 you need 52.4% to break even; at -120 you need 54.5%. Two points of break-even is a large share of a typical edge, which is why paying extra juice can turn a good bet into a bad one.

Is half a point really worth it?

Often, yes. Many games land within a point or two of the line, so a half point changes the result of a meaningful share of bets over a season. Shopping for the best number is the easiest edge most bettors leave on the table.

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