On this page, BettingUSA explains how over/under bets work, where to find them, and how to make the most out of totals bets. Already a pro? Sign up to get started betting! You can bet on either over 2.5 goals being scored in the match, or under 2.5. Unlike a point spread bet in which you are aligning yourself with one team, you’re betting on both teams – either their offenses or the defenses – when Resource betting the Over/Under. Sports books set Over/Under scores on games based upon numerous factors. For example, you may go to the Champions League soccer betting markets and identify Bayern Munich vs Ajax Amsterdam as one of the options you would like to explore in this market type. As a football fan, you understand that Bayern Munich is a decent team that scores a load of goals, and Ajax also has a decent attack. Your expectations would be that the game would have a total of over three goals, therefore, you may select the Over 3.5 option. Should the game end in a 3-1 win for Bayern Munich, you win the bet because the total number of goals scored in the match is 4, with Bayern scoring three and Ajax scoring one.