A +1.5 spread is commonly seen in baseball betting, the standard runline for MLB. This spread means the underdog must win outright or lose by exactly one run to cover the spread. Alternatively, a -1.5 spread means that the favorite must win by at least two runs. Many baseball games are decided by fewer than two runs.
Handicap 1: You can back your team with a (+1) handicap, which means that your team will have a 1 goal advantage in the game, or (-1) means that your team will have to win with a score difference of more than 1 to win. Handicap -1.5: Your team will win if the score difference is two and more goals.