An Over/Under is a bet on whether the total score of a game will be over or under a certain number. You’ll sometimes see them called “Total” Bets. For PROLINE In-Store, you might see Over/Under bets for specific actions in a game instead of for the total score. Bets on specific game actions are known as Proposition or “Prop” Bets. For example, betting on whether a football running back will deliver over or under a total amount of rushing yards, is an Over/Under Prop Bet.