In sports betting, +1.5 refers to the point spread. If a team is listed as +1.5, it means they are the underdog and are given a 1.5 point advantage. This means that if the team loses by 1 point or wins the game outright, the bettor who placed a bet on them will win the bet. Isuru Gunarathna.The underdog\n\n A plus sign (+) in front of the handicap indicates an underdog. The 49ers are the +1.5 underdog in this game, meaning oddsmakers believe they will lose, but only by a point. To win this point spread bet with the 49ers, San Francisco would need to win the game outright or lose by one point exactly.
