What Does a +1.5 Run Line Mean in MLB Betting?

Toronto Blue Jays' George Springer, right, celebrates with Vladimir Guerrero Jr., left, after his three-run home run off Seattle Mariners starting pitcher Bryce Miller during the fifth inning of a baseball game Sunday, May 11, 2025, in Seattle.
(AP Photo/John Froschauer)
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  • A +1.5 run line means a team is an underdog.
  • Run line bets can be a good way to find value.
  • Payouts vary depending on the odds.

Run line bets are a good option when it comes to analyzing the MLB betting markets, particularly if the moneyline and game total are unappealing. The +1.5 run line is very common. 

What Does a +1.5 Run Line Mean in MLB Betting?

A +1.5 run line means a team is a 1.5-run underdog. The majority of baseball betting lines feature a +1.5 underdog. 

BetMGM’s MLB odds also feature alternate run lines. This is another way to bet on a +1.5 run line. 

What is a +1.5 Run Line Bet? How to Bet the +1.5 Run Line in Baseball

A +1.5 run line is a wager on a team to win the game or lose by one run. Betting a team on the +1.5 run line means backing them to avoid losing by multiple runs. 

It is a good idea to look at previous run line records when wagering on the +1.5 line. For instance, if the Toronto Blue Jays are 20-30 on the run line as an underdog, I would likely steer clear.

What’s the Payout for a +1.5 Run Line in Baseball?

Payouts for a +1.5 run line bet vary depending on the odds set by the sportsbook. If a team is a heavy underdog, they will have longer odds on the +1.5 run line. 

For example, the New York Yankees at +1.5 might be +210 if they are a heavy underdog against the Detroit Tigers. A $10 wager would carry a potential payout of $31. 

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