An over–under or over/under bet is a wager in which a sportsbook will predict a number for a statistic in a given game, and bettors wager that the actual number in the game will be either higher or lower than that number.

How do you calculate over under?

Over/Under Bet Payouts

If you bet $100 on the over, you would win because 86+84=170. 170 is greater than 165.5, so the over wins. You would be paid out at -110 which would net you a profit of $90.91. If you bet the under and the score was under 165.5, you would be paid out the exact same amount for your bet.

Is it better to bet over or under?

Now, both teams have to collectively score more points in order for the over to win. This also makes the under bet easier to win, as the teams can score more points, and you'd still win that bet. This should get more people to bet the under and fewer to bet the over.