A favorite (e.g. Patriots -280) on the money line works just like our bet price example above. In our new example, the Patriots are listed at -280, meaning you would need to risk $280 for a return of $100 on them. It follows that a winning bet on the Pats pays $100 (plus your initial investment of $280 back). This added risk is why betting the spread is usually more popular, especially on favorites.
The bookmaker functions as a market maker for sports wagers, most of which have a binary outcome: a team either wins or loses. The bookmaker accepts both wagers, and maintains a spread (the vigorish) which will ensure a profit regardless of the outcome of the wager. The Federal Wire Act of 1961 was an attempt by the US government to prevent illegal bookmaking. However, this Act does not apply to other types of online gambling. The Supreme Court has not ruled on the meaning of the Federal Wire Act as it pertains to online gambling.
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.
Money Line: More common in baseball and hockey, pro football moneylines are growing in popularity. There is no spread, so your team just needs to win the game, not win by a certain number of points. The negative value means a favorite (-190) and a positive one indicates an underdog (+170). Picture the number 100 sitting in between these two values. Example: if you want to pick a -190 favorite, you must risk $190 in order to win $100. To back a +170 underdog, you put up $100 and win $170 if the dog wins. In some cases, betting moneylines is actually better value and can provide a bigger profit for less risk.