While home field advantage may be a sports term, it can also be linked to your house, your route to work, or even a trip to a familiar grocery store. Think about this for a second. If you've ever hosted a party at your house, you know where everything is and you would have free reign to go into any cupboard, drawer or room you that you please. That would be an example of home-house advantage. If you've ever gone to an unfamiliar grocery store (maybe you weren't around town but you needed to make a pit stop), it is going to take you a while to find exactly what it is you are looking for. Read More >>
For example, the Golden State money line above is listed at -340 odds. Using the same principles we just discussed, $340 needs to be bet in order to win $100. Again, this is just the bet to winnings ratio - $34 will win $10, $17 will win $5, $20 will win $5.88, etc. This may seem unfair at first but it is logical. The Warriors are by far the best team in the league and have a much better chance of winning the game. Therefore, sportsbooks even this out by placing the odds at a high price for bettors to win a little.

The point spread is essentially a handicap towards the underdog. The wager becomes "Will the favorite win by more than the point spread?" The point spread can be moved to any level to create an equal number of participants on each side of the wager. This allows a bookmaker to act as a market maker by accepting wagers on both sides of the spread. The bookmaker charges a commission, or vigorish, and acts as the counterparty for each participant. As long as the total amount wagered on each side is roughly equal, the bookmaker is unconcerned with the actual outcome; profits instead come from the commissions.


It is also widely known as the over/under and, just like the point-spread myth, it is not Las Vegas' guess at how many points will be scored in the game by both teams combined. It's a number it feels will encourage just as many bets on the over as the under. If you picked the under 47.5, you want tough defense and the team running the ball to eat the clock. If you pick the over, you want offensive fireworks and long bombs for TDs. In totals betting, you are predicting whether the combined total score will be more than or less than the total.

If your sports betting experience consists mostly of office pools during March Madness or a casual wager between you and a friend while you watch the Super Bowl, the transition to serious sports betting means learning how to read betting lines. The biggest difference between making the kind of casual bets mentioned above and placing wagers with online sportsbooks or at brick-and-mortar bookshops is the use of sports betting lines. Casual wagers usually involve each person in the bet picking one team to win, then wagering an equal amount, say $20 or $30. Professional bookmakers, online sports betting exchanges, and sports betting facilities in casinos have a more complex system for offering wagers on sporting events, in part to ensure profit on the part of the book, and in part to present a standardized representation of odds.
The last number in the top two rows of our sports line example is known as the money line. If you’re not interested in betting on the point spread, you can wager on a team to win outright. The plus sign next to the underdog (in our case, the Giants) indicates how much money you’ll earn for every $100 you bet on the money line. Conversely, the minus sign next to the favorite’s line tells you how much you have to wager in order to win $100. In our example, a $100 wager on the Giants earns you $300 should they pull off the upset, while a bet of $405 on the Cowboys will net you an extra $100. Representing odds in units of $100 makes placing different size bets easy; if you want to bet $10 on the Giants, you stand to earn $30 if they win, while a $40.50 bet on the Cowboys will net you an additional $10.
The moneyline is different. First, with the moneyline whichever team wins the game pays out. There’s no giving or taking away of points. How do the bookies even the playing field with the moneyline? They do it by making bettors wager more on the favorite to win less and allowing them to bet less to win more on the dog. The favorite is posted with a minus sign and a number. That number represents the amount of cash that has to be wagered in order to win $100. The underdog, on the other hand, is listed with a plus sign in front of a number. That number shows how much a bettor wins when they bet $100.
This is where you simply wager on which team will win the game outright, no point spreads, no BS…just the straight up winner. Although this may appear to be easier, you will pay for it as the odds (payout) will reflect the lack of a point spread. If you wager on a favorite, then you will win less than with a point spread, but if you wager on the underdog…and win…you will receive and even greater win amount based on the higher risk taken.

To achieve this balance, the book can move the spread and/or the juice at any time after the first lines hit the NFL odds board, all the way up until kick-off. If there had been too much action on the Packers at Super Bowl 1, the oddsmakers could have made Kansas City a 15-point underdog (+15), in order to encourage more people to bet on the Chiefs. They also could have kept the spread at 14 points and moved the juice, perhaps to –105 for Kansas City and -115 for Green Bay. You’ll often see the books adjust the juice first when the spread is three points; since so many NFL games end in a winning margin of three points (roughly one in six games), moving the spread from 3 to 3.5 points is a pretty big deal, and it might tilt the balance too far in the other direction.


The concept of betting on totals, or Over/Under (O/U), is quite simplistic. The bettor wagers on whether the TOTAL points scored in a game will fall over or under a pre-determined number set by the sportsbook. Much like the point spread, game totals can be swayed by public opinion. The example below, from the SI Archive, shows the opening totals line for Superbowl XLV:
“Permitted Class III Gaming. The Tribe may conduct, only on Indian Lands, subject to all of the terms and conditions of this Compact, any or all forms of Class III Gaming” (emphasis added). The agreement between the state government and Tribal governments seemingly grants the tribes, subject to the compact, extensive authority to authorize Class III gaming at their facilities.
The most famous historic example of this is Super Bowl III when the New York Jets stunned the football world and upset the Baltimore Colts. The Jets were 18-point underdogs, still the largest point spread in Super Bowl history. They won 16-7, and people wondered what the oddsmakers had been thinking. Noted oddsmaker Bob Martin was later asked if he was embarrassed making the Colts such huge favorites. He said he was not because in what was then one of the heaviest bet sporting events ever, his number drew a fairly even amount of bets on both sides. This guaranteed a profit for the house.
*Betting $110 to win $100 obviously is not an even bet. The extra $10 (or 10%) is the sportsbook’s commission, also known as the vigorish or juice. This commission is reduced to 5% with 5Dimes and other reduced juice books, but this commission is found everywhere. You are given this back when you win, but is obviously kept by the house when you lose.
Especially in major tournaments, some sports books offer odds on unusual golf propositions, such as the over/under on the winning score, the over/under on the lowest round by any golfer or the over/under on the finishing position by a particular golfer. For example, the over/under on Woods' finishing position may be 3 1/2. If he finishes first, second or third in the tournament, the "under" wins; if he finishes fourth or worse, the "over" tickets cash.

What's the difference between an oddsmaker and a bookie? A bookie's job is purely mechanical. He gets the line from Vegas or another source, offers bets at those odds, then collects money from the losers, pays out to the winners and keeps the vig. Oddsmakers don't actually take bets -- they study the games and set the lines. Bookies often adjust the spreads for their games, so they do a little oddsmaking, and oddsmakers work for casinos, which operate sports books that take bets.


Each week we see the volatility in the pro football point spread market with opening spreads often but not always moving and closing at a different number. In general the movements are caused by the weight of money on one side or the other however injury rumors or confirmation of an injury to a key player, unrest in a particular NFL team's management or any number of other reasons can contribute to a point spread line being reassessed and changed by the sportsbooks. The question is often asked then, is it better to place your NFL point spread wager early on the opening lines or wait until the hour or two before kick off? There are certainly pros and cons for both which are discussed further in The Football Lines .com's When to Place Your NFL Bet article however ultimately there isn't a definitive right or wrong answer as varying NFL betting situations can require a different and flexible approach.
For example: If it is universally believed that Alaska State is better than Hawaii Tech, a standard win/loss wager wouldn't work, since most likely people would bet more money on Alaska State. Therefore, the Sports Book could put the point spread on Alaska State at 6.5 points. This would mean if you bet on Alaska State, not only would they have to win the game, they'd have to win by at least 7 points to make you a winner, otherwise a ticket on Hawaii Tech, even though the team might have loss, would be a winner.
Conversely, in most other countries financial spread betting income is considered taxable. For example, the Australian Tax Office issued a decision in March 2010 saying "Yes, the gains from financial spread betting are assessable income under section 6-5 or section 15-15 of the ITAA 1997".[6] Similarly, any losses on the spread betting contracts are deductible. This has resulted in a much lower interest in financial spread betting in those countries.
The line opened two weeks ago with the Los Angeles Rams favored by one point. It took about an hour for the line to swing to the New England Patriots. It settled at Patriots as 2.5-point favorites for most of the past two weeks at sportsbooks tracked by OddsShark. Bovada and William Hill both offered a field goal, although William Hill came down to 2.5 over the weekend.
The second number in our example (-110 for both teams) tells you how much you have to wager in order to win $100. It’s an easy way to calculate how much you’ll win if your bet pays off, presented in units of $100 at a time for simplicity’s sake. Most of the time, these two numbers will be the same, because oddsmakers want to set lines so that they get as much action on the underdog as on the favorite, guaranteeing them a profit. If a book gets a single bet of $110 (by a customer hoping to win $100) on the Cowboys and a single bet of $110 on the Giants, it will have taken in $220, but will only have to pay back $210 to whichever customer wins the bet. That’s a guaranteed profit of $10, and since sportsbooks take far more than a single bet in either direction, they stand to earn that seemingly small amount of profit many times over. The $10 difference between what you wager and what you win is known as juice or vig in the sports betting industry, and it’s the way books earn their bread and butter.
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Generally, the number next to the spread is “-110”. This is what’s known as the juice, vig or odds. The juice is a fraction of the wager taken from the bettor if the bet wins. In this instance, a winning wager of $110 will yield a profit of $100.The example above demonstrates that, although Indianapolis won the contest, Tennessee covered the spread by losing by less than nine points. An important aspect of sports betting is capturing the best line possible. A great way to achieve this is by shopping for the best line.
Chicago is the NFC North champion for the first time since 2010, which was the franchise’s last trip to the playoffs. These franchises haven’t met in the playoffs since January 2002. They played in the 2017 regular season and the Eagles rolled to a 31-3 home victory. This Bears team is miles better than that one. Philly’s QB situation for this one is a bit unclear at the moment because Carson Wentz has missed the past three with a back injury and Nick Foles left Sunday’s win with a chest injury. Read our full betting preview of this Wild Card game here.
For the purposes of a halftime bet, the game essentially restarts at 0 to 0. According to the halftime spread, the Arizona Cardinals are expected to be outscored by the St. Louis Rams by 3 points throughout the entire 2nd half. A halftime bet of $110 dollars on the Arizona Cardinals would lead to a profit of $100, because, not only did the Cardinals beat the spread, they won the game outright. These bets are taken during halftime, leaving a small window for the bets to be placed. You can track halftime odds easily using our Sportsbook Insider live odds software.
As you can see, there’s another number in our example above. The –110 in parentheses refers to the juice; this figure is expressed in the same fashion as moneyline odds, with either a negative or positive sign in front of the number. In this case, in order to place a wager on either side, you would have bet $110 to win $100. If the juice on Kansas City had been +110, you would have bet $100 to win $110. Most NFL game lines ask you to pay the standard –110 vigorish. If you don’t see any particular figure attached to the spread, the usual –110 vig applies.
The punter usually receives all dividends and other corporate adjustments in the financing charge each night. For example, suppose Lloyds Bank goes ex-dividend with dividend of 23.5p. The bettor receives that amount. The exact amount received varies depending on the rules and policies of the spread betting company, and the taxes that are normally charged in the home tax country of the shares.

Remember that betting on NFL games with an online sportsbook or offline is not legal in all jurisdictions. So if you are planning on using FootballLOCKS.com's NFL selections to gamble on various NFL games, such as betting the NFL Super Bowl spread with an online NFL sportsbook, it might be wise to check if NFL gambling is legal in your specific jurisdiction.
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