_{covering a spread - When a team surpasses the expectations of a point spread set by football experts. For instance, if a team is expected to win by 10 points, and they actually win by 11 or more, this is called 'covering' the point spread. If the team wins by nine or less, or they lose the game, this is called NOT 'covering' the point spread. If the team wins by exactly 10 points, this results in a push or tie. }

What this means is that in each contest, there is going to be a favorite and an underdog. It’s important to point out that when you look at a moneyline bet, and you see that a team is a favorite or an underdog, this is only in relation to the money that is being bet. While these numbers will usually be in line with which team is the actual favorite and underdog, it could be different. Remember, the betting lines are tweaked so that the sportsbook can get the right amount bet on each side of the contest.

_{The optimal situation for bookmakers is to set odds that will attract an equal amount of money on both sides, thus limiting their exposure to any one particular result. To further explain, consider two people make a bet on each side of a game without a bookmaker. Each risks $110, meaning there is $220 to be won. The winner of that bet will receive all $220. However, if he had made that $110 bet through a bookmaker he would have only won $100 because of the vig. In a perfect world if all bookmaker action was balanced, they would be guaranteed a nice profit because of the vig. }

__The true purpose of a pointspread when it is released by any sportsbook is to try and attract an equal amount of betting action on either side of a matchup. If all the early money is flooding in on New England as the favorite with a seven point spread, the betting outlet handling this action is likely to move that betting spread to 7.5 points to try and attract some money towards Miami as the underdog.__

__This is different from a moneyline, where payouts can vary greatly because there is not point spread that is installed. It is simply picking the winner straight up. Therefore, a bet on the favorite would not profit as high as it would betting the spread since no points are given. Payouts on the point spread are not always the same, but they do not vary like a moneyline.__

_{Proline will set a point spread for each game of either -0.5 / +.05, -1.0 / +1.0, or -1.5 / +1.5. If you choose -0.5 the team must win by 1 goal or more to win your wager. If you choose +0.5 your team must win or tie the game. Note that OLG Proline includes the shoot-out for point spreads so there are never any ties for the -0.5 / +0.5 spreads. If you choose the -1.0 spread your team must win by 2 or more goals to win the bet. If they win by 1 goal exactly it is a push. If you choose the +1.0 spread your team must win the game by 1 or more goals. If they lose by 1 goal it is a push. If you choose the -1.5 spread your team must win by 2 or more goals. If you choose the +1.5 spread your team must win the game, tie, or lose by 1 goal to win the bet. }

^{Because the spread is intended to create an equal number of wagers on either side, the implied probability is 50% for both sides of the wager. To profit, the bookmaker must pay one side (or both sides) less than this notional amount. In practice, spreads may be perceived as slightly favoring one side, and bookmakers often revise their odds to manage their event risk. }

‘Extra-Time’ wagers apply to 30 minutes of play according to the match officials, plus any added injury or stoppage time. However extra-time and penalty shoot-outs are not included. In ‘Extra-Time’ markets, wagers apply to the result during the extra-time period only. For the purposes of this market the score shall be deemed to be 0-0 at the start of the extra-time period.

Technically, probability should always be a number between 0 and 1. It's often expressed as a percentage though, which makes things easier for the purposes of betting. 0.7059 converted into a percentage (i.e. multiplied by 100) gives us 70.59%. What this means is that the odds suggest the Celtics have a 70.59% chance of winning. If we believe the Celtics have an even greater chance of winning, then we should back them at odds of -240.

*Ideally, the lines I release will balance the action equally, so that the winners get paid out from the pockets of the losers and we take the vigorish. That’s an ideal that rarely happens – especially in sports without a pointspread, like NASCAR and golf. If Team A is getting too much action, I’ll move the line toward Team B to try to achieve that balance. My personal preference is to tweak the vig from –110 to –105 or +100 before taking the bigger step of moving the spread a half-point or more.*

Let’s say that the Mavericks and the Magic are playing in an upcoming game, and both teams are equal counterparts. Let’s say that the odds for that game are as follows. You will never see these odds, though, because in this example, the sportsbook is not set to make any money if they achieve their goal of getting money on both sides of the bet. But we need to look at it for you to better understand things.

*Remember with bets like this you can still be profitable by betting several options. Let's say you think Chelsea is going to win, but you also think Manchester United, Liverpool, and Everton also have a shot. If you were to place a $100 wager on all four of these teams, you would still turn a profit! Let's pretend you did this and say that your last pick Everton pulls it off and wins the regular season according to the sportsbook. Remember, they don't have actually to win, they just need to be on top after the sportsbook makes the point spread/handicap adjustments to the final rankings.*

^{The second way is “eyeballing it.” If two teams play 10 times, how many times do you think a certain team is going to win? If you say they are going to win 6 times, then you think they are going to win 60% (6/10) times. Looking at it as a series of multiple games makes it a lot simpler for you to grasp and predict. Then, you just convert that number to a percentage and compare it with the implied probabilities offered at the sportsbooks. If there is value, go for it. }

__For those who are just starting to place sports wagers online, moneylines can be a bit confusing and overwhelming. They differ from point spreads, which are more concerned with the winner and by how much they win. With moneylines, the winning bet will be based on who wins and that is it. These types of bets are usually placed when betting on low-scoring games such as hockey or baseball, but they can also be an option with boxing and some mixed martial arts. The key to understanding moneyline betting is learning how to read the lines. Bettors will usually see a + and a – amount after the listed teams. The – indicates the favoured team. Let’s say there is a moneyline of +120 and -130. The -130 is the favoured team and will cost $130 in bets to collect $100 on a win. If punters choose to bet the underdog at +120, they will bet $100 and will win $120. Basically, one will have to wager more on the favoured team to come out ahead.__

*Sports betting has been around since 1000 B.C in China, where betting on animal fights was commonplace. In ancient Rome, one could wager on the Gladiatorial games. The idea of betting on sports is as old as organized sport itself. But up until the 1940s, bettors were fairly limited in what kind of bets they could make. The standard system of odds would allow bets on, for example, the 3-1 odds that the Steelers would beat the Browns.*