A parlay basically combines several different wagers into one. For example, a parlay could be made up of five point spread wagers on five separate games. The payout for such a wager could be very attractive, but only if ALL the wagers were correct. Just one wrong pick would mean the whole wager failing. That's why these are considered quite risky. They're a bit more complex than the previous wagers mentioned, but we won't go into any more detail here. We do on the following page though.
Point Spread: The point spread remains the favorite way to wager on pro football, regardless of how many new forms of wagering come on stream. It’s called the line or spread and it’s known as betting ‘sides.’ The common misconception is that Las Vegas sets the spread as its best guess at the margin of victory. But really, it's a number they feel that is a perfect balance and will see an equal number of people to bet the underdog as on the favorite. A negative value like -6.5 means that team is favored by 6.5 points. So deduct 6.5 points from their total score. A positive value on the same game would be +6.5 (add 6.5 points to their final score) and would make that team an underdog of 6.5 points. The favorite must win by at least seven points to cover the spread. The underdog can lose by six points and still cover.