OddScore follows baseball on 3 markets. The moneyline (2 outcomes, extra innings included), the run line (the spread, usually -1.5 or +1.5) and the over/under runs (total runs scored). The league is MLB. Odds refresh every 15 minutes, each game gets a 0 to 100 signal and an AI reading lands about 30 minutes before the first pitch. That reading sums up what the market is saying. It's not a bet to follow, and OddScore gives no betting advice.
The 3 baseball markets OddScore follows
OddScore follows three baseball markets: the moneyline, the run line and the over/under on total runs. Odds refresh every 15 minutes. Each game gets a 0 to 100 signal, then an AI reading about 30 minutes before the first pitch.
The method is the same as for the other sports. We compare prices across several sportsbooks, convert them into real probabilities and read the gaps. The detail is on the How it works page, and the vocabulary is in the glossary.
The moneyline: 2 outcomes, extra innings included
The moneyline has just 2 outcomes: the home team or the road team. An MLB game never ends in a tie. If it's tied after 9 innings, they play on until one team leads.
Since 2023, every regular-season extra inning starts with a runner already on second base. That rule doesn't apply in the postseason. The moneyline OddScore follows counts those extra innings.
A rain-shortened game can still count. Under MLB rules, it becomes official after 5 innings, or 4 and a half if the home team is ahead. Sportsbooks don't all use the same rule for voiding bets. Always check theirs before you bet.
The run line: the favorite at -1.5
The run line is baseball's spread. It's almost always set at -1.5 for the favorite and +1.5 for the underdog. The odds move while the line stays put. The general idea is explained on the spread betting page.
Take a fictional Dodgers vs. Giants game. The Dodgers might be 1.65 (-154) on the moneyline but 2.40 (+140) at -1.5. Same team, very different price. That gap is the cost of needing a two-run win.
And lots of MLB games are decided by one run. The underdog at +1.5 covers if it wins, or loses by a single run. A home team leading after the top of the 9th doesn't bat in the bottom half, so it gets half an inning less to stretch its lead.
Over/under runs
OddScore also follows the over/under on total runs scored by both teams. Lines usually sit between 7.5 and 9.5. The general mechanics are on the over/under page.
You'll also see whole-number lines in baseball, like 8 or 9. If the game lands exactly on the line, it's usually a push. Check your sportsbook's rule.
A straight answer on one point: OddScore doesn't calculate expected runs here. Runs don't fit the model we use elsewhere. So the reading relies on market probabilities and how they move.
Reading line movement before a game
The starting pitcher often matters more than anything else. He's usually announced a day or two ahead. If he changes, the moneyline and the total move together. Some sportsbooks let you tie the bet to the listed pitchers, and void it if one of them doesn't start.
As I see it, that's what sets baseball apart: one name can move the line more than an injury does in other sports. Then come bullpen fatigue, a packed schedule and the weather. Wind and heat shift the total. The ballpark counts too: at Coors Field in Denver, the altitude pushes scores up.
OddScore checks whether a move is backed by several sportsbooks at once and when it shows up. The three markets are then compared to see if they tell the same story.
Regular season, postseason and the World Series
The regular season runs from late March or early April to late September. Each team plays 162 games, almost every day. The postseason follows in October, through the World Series.
From November to March, there are no MLB games. The analyses pick up again with the schedule.
MLB
OddScore follows MLB with the same markets and method as the other sports. The Japanese and Korean leagues and the minors aren't tracked.
OddScore isn't a baseball picks site
As with every other sport, you won't find a slip to copy blindly here. The AI reading sums up what the market says before the game: line movement, real probabilities, sportsbook signals. No result is guaranteed.
Responsible gambling: a baseball game stays uncertain until the final out. Sports betting carries a risk of financial loss. Set yourself a budget, don't chase your losses, and use the deposit limits and self-exclusion tools available. Need to talk to someone? The National Council on Problem Gambling helpline is 1-800-MY-RESET (1-800-697-3738). Learn more about responsible gambling.
See also: how it works · soccer odds · tennis odds · basketball odds · NFL odds · hockey odds · odds converter · margin calculator · the baseball page
Put it into practice
Apply this guide to real odds.
See a market reading
A real match with its odds, movements and 0-100 signal.
Open the demoMargin calculator
Measure a bookmaker's margin on any market.
Calculate the marginDig into the market
Odds movements are only part of the story. Here are the next topics to read.
Understanding line movement
Why odds shorten or drift, and what those moves can tell you about the market.
Read the guideWhy odds change
Injuries, betting volume, sportsbook adjustments: what usually moves the line.
Find outSpread betting explained
Spread types, half-point lines, settlement. The basics to read a run line without slipping up.
Find outOver/under explained
How to read a totals line, and why half a point decides whether a push is possible.
ReadFrequently asked questions
Which baseball markets does OddScore analyze?
Three. The moneyline (2 outcomes), the run line and the over/under on total runs. OddScore reads the line movement on all three and turns it into a 0 to 100 signal.
Which baseball league is covered?
MLB. Other leagues (Japan, Korea, the minors) aren't tracked.
What's the run line?
It's baseball's spread. It's almost always set at -1.5 runs for the favorite and +1.5 for the underdog. The favorite has to win by two runs or more to cover. The underdog covers if it wins, or loses by one run.
Does the MLB moneyline include extra innings?
Yes. A baseball game never ends in a tie. If it's tied after 9 innings, they keep playing extra innings until one team leads at the end of one. The moneyline OddScore follows counts them.
Why are some run totals whole numbers?
In baseball you'll see half-run lines (8.5) and whole-number lines (8 or 9). With a whole number, a game landing exactly on the total is usually a push, and your stake comes back. Every sportsbook has its own rules, so check them before you bet.
Does OddScore calculate expected runs?
No. In basketball, football and hockey, OddScore derives an expected margin from the market lines. In baseball it calculates neither expected runs nor an expected margin: the reading rests on market probabilities and how they move.
When is the MLB season?
The regular season runs from late March or early April to late September, with 162 games per team. The postseason follows in October, through the World Series. From November to March, there are no MLB games.
Does OddScore give baseball picks?
No. OddScore isn't a picks site and gives no betting advice. The AI reading sums up what the market says about the moneyline, the run line and the over/under runs. It's not a bet to follow.
Sources & method
This page describes the baseball markets OddScore follows (moneyline, run line, over/under runs) and the league covered. The rules on extra innings and official games come from MLB's own publications. Sports betting in the US is regulated state by state; New Jersey's Division of Gaming Enforcement is one example. The analysis method (line movement, real probabilities, 0-100 signal) is on the How it works page, and it's the same for every sport.
- Watch odds changes across several sportsbooks on the moneyline.
- Follow the run line between the two teams.
- Follow the over/under market on total runs.
- Convert odds into real probabilities to strip out the vig.
- Boil the analysis down to a simple 0 to 100 signal, backed by an AI reading.