If you are able to interpret NFL odds and know what the various terms mean, such as the rotation number, point spread, moneyline and over/under, you’ll have a basic understanding on what you are betting. Prior to wagering make sure you see our NFL odds page, which carries all the latest odds from the top online sportsbooks. Remember that the odds makers are attempting to even the out the bets on each game. The sports bettor has to analyze each game and the odds and make their bets accordingly in order to win cash.

A point spread (or line) is a tool used by sportsbooks to attract wagers on both sides of a game. The line is most commonly used in football and basketball games. Because it’s rare for two teams in a pro sports game to be completely evenly-matched, one team will have an advantage, another will be seen as the underdog. The point spread is the handicap offered to the underdog to level the playing field, so to speak.
Betting against the spread or ATS, as it's known in the sports betting industry, is among the toughest bets to turn a profit in over the long run. When looking at a team's record, the only thing that matters to them is winning the game outright and moving up in the regular-season standings. Teams like Golden State or the New England Patriots are generally always among the best teams in the league (straight up) but are typically a bad bet to make ATS. The reason for this is because the better the team is, the more public attention they draw and the higher the point spread is. Sportsbook know which teams the public darlings are and as such inflate the spreads in order to take advantage of how overvalued the public makes them. A team like the Patriots could go 14-2 every season but they could be a dismal 7-9 or 6-10 against the spread because they are laying more than 10 points in every game.
So to solve the first fraction for the Heat, we do 13 divided by 20 and get 0.65. Let’s look at our calculations for the \$10 bet and the \$250 bet. If we bet \$10, we multiply our solved fraction of 0.65 by \$10 and get \$6.50. This is our correct profit! If we bet \$250, we multiply our solved fraction of 0.65 by \$250 and get \$162.50. This is out correct profit!
For example, let’s say you’re thinking about betting on something that is -3500. You are almost 100% sure that you’re going to win this bet. If you bet \$100 on this bet, you’re going to see a profit of \$2.86. Again, this might be worth it to you. An almost 3% return on a sure thing might be something that you’re interested in. However, if you’re looking to make any meaningful profit, you’re going to have to risk a lot of money. To win \$100, you’re going to have to risk \$3500.
In this game between the Boston Celtics and the Dallas Mavericks, you’re given the option to bet on either team. Going into this game, you know that Mavericks are favored to win. If the sportsbook didn’t adjust something (the line or the payouts), everyone would bet on the Mavericks, and no bets would come in on the Celtics. If the Mavericks were to win, the sportsbook would be out of money and have to shut their doors.