Typically, +1.5 that appears with a team means that this team is a 1.5 point underdog compared to the other team. In other words, it means that the other team has a higher probability of winning or is the favorite. However, note that +1.5 means that this event is an extremely close matchup. Either called a spread bet or betting against the spread, +1.5 means that the team needs to win by a minimum of two points for you to win the bet.