Let's use this formula to calculate the implied probability of the Celtics winning their game against the Grizzlies. We know the odds are -240, which means we'd have to risk $240 for a total potential return of $340 (the initial stake plus the $100 winnings). So the calculation here is $240 divided by $340. This gives us an implied probability of 0.7059.

If you have stumbled upon this page, chances are you are hoping to learn the definition of a point spread when it comes to sports gambling, specifically basketball gambling. Or maybe you already know what a point spread is, but you are hoping to learn as much as you can before you put some money down on a specific team or game. Whatever the case, you have certainly come to the right place! Keep reading to learn everything you could have ever hoped to know regarding a point spread in sports gambling.

*The point spread is basically used to create a 50/50 betting proposition. In this example, the Celtics are theoretically just as likely to win by six points or more as the Grizzlies are to lose by less than six points. This is reflected in the odds, which are typically -110 on both sides of the wager. You have to risk $110 for the chance of winning $100.*

## For each NFL game the oddsmakers set a number of points in which the favored team is favored by. Bettors can then either choose for the favored team to win by more than the number of points set, or bet on the underdogs to lose by less than the number of points they are underdogs by or win the game straight up. For example, the spread could be set on the favored team at 6.5 points. This would mean in order for a bet on the favored team on the spread to win they would need to win by more than 6.5 points (7 or more) in order to win the bet. It also means that a bet on the underdog team would win if the underdogs lost by less than 6.5 points (6 or less) or won the game outright.

As we did with the underdogs, we need to figure out how much we will profit for each $1 that we wager. For underdogs, we divided the moneyline number by 100. For favorites, it is the exact opposite. We will take 100 and divide it by the money line number. So, for this example, we will take 100 and divide by 155 and get about $0.645 or about $0.65 in profit for every dollar that we bet.

*Oddsmakers want you to gamble on underdogs as well as favorites. They set points spreads that encourage balanced betting. They analyze the strengths and weaknesses of each team, factoring in won-loss record, strength of schedule, results against common foes, key injuries, recent performance and previous games between the teams. They also rate the value of home field advantage and consider the game day weather forecast where relevant. If they see heavy wagering on the favorite, they will increase the point spread during the week to spur more betting on the underdog. If more money is going on the underdog, the spread will decrease as game time nears.*

# In the UK and some other European countries the profit from spread betting is free from tax. The UK and some other European countries tax authorities designate financial spread betting as gambling and not investing, meaning it is free from capital gains tax and stamp tax, despite the fact that its regulated as a financial product by the Financial Conduct Authority in the UK. Most traders are also not liable for income tax unless they rely solely on their profits from financial spread betting to support themselves. The popularity of financial spread betting in the UK and some other European countries, compared to trading other speculative financial instruments such as CFDs and futures is partly due to this tax advantage. However, this also means any losses cannot be offset against future earnings for tax calculations.

*All connotations related to the bet must be fully and unquestionably complied with for the bet to be deemed as winning, regardless of any possible conflict with the sport-specific rules, or with any potential interpretation based on previous or current presentation of offers related to events in that particular sport and the way these are normally presented in DraftKings Sportsbook. Bets will be settled as void should it still be impossible to determine a winning outcome.*

As we did with the underdogs, we need to figure out how much we will profit for each $1 that we wager. For underdogs, we divided the moneyline number by 100. For favorites, it is the exact opposite. We will take 100 and divide it by the money line number. So, for this example, we will take 100 and divide by 155 and get about $0.645 or about $0.65 in profit for every dollar that we bet.

*You’ll need to know how the rotation number, point spread, moneyline and over/under are used and what each means. Each of these terms may be called by another name. The rotation number if often referred to as the number or the rotation mark, moneyline becomes line, point spread is called the spread, and over/under becomes the total. When you come down to it, these are the major terms that can be lumped under the heading odds.*

**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.**

You may have heard the term “covering the spread” or the phrase “betting against the spread.” This means that if the favorite team wins an event with the point spread taken into account or that the underdog team wins with additional points, they have covered the spread. If the Packers win that game by more than 7 points, they have covered the spread.