Is the run line a better bet than the moneyline?
Neither the run line nor the moneyline is the better bet as a rule. Graded against real MLB results, every side of both markets came back inside its own noise floor: the home -1.5 at about +3.8% expected value and the road +1.5 at about -5.4% over 753 games, moneyline favorites at about -0.8% and underdogs at about -3.1% over 1,111 games. Which bet is the better one is decided by the price on the slip, not by the market it sits in.
Written by Jesse, NegativeEV. Last updated 7 August 2026.
What is the difference between a run line and a moneyline?
A moneyline is a bet on which team wins. A run line is a bet on the margin, almost always set at 1.5 runs. One team is laid at -1.5 and has to win by two. The other is taken at +1.5 and covers by winning, or by losing by exactly one. Same game, two different questions, two different prices.
Which pays better, the run line or the moneyline?
Neither, on the samples measured.
| Bet | Sample | Realized EV per bet | Separates from zero? | Book's margin in the quotes |
|---|---|---|---|---|
| Run line, home -1.5 | 753 games | +3.8% (± 4.6) | No | 4.1% |
| Run line, road +1.5 | 753 games | -5.4% (± 2.9) | No | 4.1% |
| Moneyline, favorite | 1,210 bets | -0.8% (± 2.5) | No | 3.9% |
| Moneyline, underdog | 1,012 bets | -3.1% (± 3.6) | No | 3.9% |
The run line rows are 753 MLB games quoted at the standard line. The moneyline rows are cuts of 1,111 MLB games over the same window. Every figure sits inside its own noise floor, which means these samples cannot rank the four sides and cannot rank the two markets against each other. Both markets are close to fair once the price is shopped across books.
The measurements behind this page: run lines graded against real final margins and moneylines graded against real winners.
Is the +1.5 run line the safer side?
Safe and cheap are not the same thing. The road +1.5 won 59.1% of those 753 games. The price charged for it implied 62.6%. Winning often is already in the number. That side graded out at about -5.4%, the weakest figure in the table, though not by enough to call.
Which side of the run line costs more?
No answer from this data. Three windows of the run line market have now ordered the two sides three different ways. A 206-game pass, a 245-game pass and the full 753-game archive each tell a different story. A market that reorders itself every window is a market too close to fair to read.
What does this page not cover?
One game. Every number here is a board-wide average over a fixed window, and none of it says whether tonight's run line is priced right. The simulator also does not know what never reached the record: a late scratch nobody reported, an injury a team is sitting on, weather that turns after first pitch. A bet that cannot be matched to a simulated game comes back ungraded rather than guessed at.
How can a run line or a moneyline be checked?
Paste the bet and read the simulated probability. NegativeEV simulates each MLB game thousands of times, pitch by pitch, then counts how often each side actually wins or covers. That rate is compared with the posted price and the bet comes back graded as an expected value. Free at negativeev.com. Ten checks a day, unlimited when signed in.
More on run lines: https://negativeev.com/about/run-lines
Related reads: every market measured so far and favorites versus underdogs.