Betting on the runline means wagering on a team to either win by more than a specified number of runs or lose by fewer than that number. In baseball, the runline is typically set at 1.5 runs. For example, if you bet on a team with a -1.5 runline, they must win by 2 or more runs for your bet to be successful. If you bet on a team with a +1.5 runline, they can either win outright or lose by no more than 1 run for your bet to be successful.