Score three is usually the one that confuses people. Remember, when betting on point spreads, the favorite has to win by more than the number of points they are projected to win by. The underdog can lose the game, and you can still win your bet as long as they don't lose by more points than they are spotted. In the above example, if you were to bet on the Chargers at +3, you can imagine that like you have three bonus points to play with. You can lose by one point or by two points and still win the bet. If you bet the Chargers at +3 and lose by three points, it is a tie.
A “Win/Place” or “Each Way” bet (aka EW) refers to a bet where the chosen selection must either win or place within the payout terms. The bet is divided in two parts,the “Win” part and the “Place” part of an equal stake or wager. Settlement of such bets will take into account the applicable rules governing the "Win" and "Place" bets, namely the Sport-specific rules as well as any applicable ‘Dead Heat Reductions’.
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.