What the MLB Run Line Actually Means for Your Wager
The standard MLB run line is set at 1.5 runs — the favorite must win by two or more, while the underdog can lose by one and still cover. That fixed margin makes baseball spread betting different from NFL or NBA lines, where spreads move several points. Because a one-run lead is the most common MLB margin of victory, the juice on
each side swings dramatically. A heavily favored team might sit at -1.5 with -200 juice, meaning you're paying more to back them on the spread than on the moneyline — something casual bettors often miss at first glance. Luckroom surfaces the moneyline side-by-side with the run line so you can compare both markets without jumping between screens. Alternate run lines — at
-2.5 or +2.5 — also appear in our MLB spread market for matchups where the standard 1.5 feels too thin.