An over-under (O/U) bet is a wager in which a sportsbook predicts a number for a statistic in a certain game (typically the aggregate score of the two teams) and gamblers wager that the actual number in the game will be greater or lower than that number. For example, if the line on a basketball game is set at 95 points scored (the over), then gamblers could place bets on scores above or below 95 to make money. The term refers to the fact that you have to add up the number you think they will win (over) and then subtract the number you think they will lose (under). For example, if I think that the Los Angeles Lakers will beat the Brooklyn Nets by 10 points and take all their cash, I would need to come up with ten numbers to get an O/U price. In this case, the O/U would be the total amount wagered ($110,000 in this example). Since we are betting on the Lakers to win more points than the Nets, we are saying that they are an over-performer. If they were under-performers, we would be saying that they are an under-performer. Over-under statistics are used in many sports, such as college football and basketball, where lines are set before the season starts.