Notice that point spreads adjust the score for the favorite team. This is easiest to see with an example: If the New York Knicks are playing the Boston Celtics, and Boston is favored to win by a 4-point spread, then a bet on Boston only pays out if Boston wins by more than 4 points. A bet on New York pays out if New York wins or if they lose by less than 4 points.
"There’s only so much discretionary income in the Commonwealth, and if this new form of betting taps into it, we feel our sales could be negatively impacted, which in turn could effect proceeds to the Commonwealth," Polston said in an email. "As those proceeds fund college scholarship and grant programs — including every dollar of the popular KEES scholarship — there’s a lot at stake here."
For example, if you want to bet that -140 favorite, you’ll need to risk $140 in order to win $100. To bet on the +120 underdog we mentioned above, you’ll need to bet $100 to win $120 if the dog wins outright. In many cases, betting moneylines offers better value and can provide a bigger profit for less risk. Check out our NFL Betting Guide to learn more about when you should bet a moneyline instead of a point spread.
In addition to the spread bet, a very common "side bet" on an event is the total (commonly called the over/under or O/U) bet. This is a bet on the total number of points scored by both teams. Suppose team A is playing team B and the total is set at 44.5 points. If the final score is team A 24, team B 17, the total is 41 and bettors who took the under will win. If the final score is team A 30, team B 31, the total is 61 and bettors who took the over will win. The total is popular because it allows gamblers to bet on their overall perception of the game (e.g., a high-scoring offensive show or a defensive battle) without needing to pick the actual winner.
Total: Also called the over/under, it is a number set by the sportsbooks that proposes a number of points that will be scored in the game by both teams combined. Then, fans predict whether there will be more points or less points than the ‘total.’ If you bet the under 41.5, you are hoping for a tough defensive battle with lots of running game. Pick the over, and presumably you feel this will be a high-scoring game. In short, you are predicting whether the combined total score will be more than (over) or less than (under) the total.