Money line bets are particularly attractive to square bettors when they are looking at underdogs. They see a nice high positive number and think that the payoff is significant enough to be worth the risk. Unfortunately, underdogs are underdogs for a reason, and it’s usually because they aren’t very good. However, when the right opportunity presents itself, a money line bet on an underdog can grow your bankroll quicker than betting favorites would.

Of course, it wouldn’t be. Everyone would bet on Mike Tyson, and the sportsbook would lose all of their money and close the next day. So what the sportsbooks do is they assess who is the favorite and who is the underdog and assign a value to how much in each direction they think they are. Let’s look at what the odds might look like for our fictitious fight and break down what everything means.
This is a type of betting line which lays out the amount a player must wager in order to win $100.00, or the amount the player wins on a wager of $100.00. There is no point spread or handicap in this line.  In order to win a moneyline bet, the team wagered on simply has to win the game. Payoffs are based on true odds rather than fixed odds. The amount the player lays or takes may vary from game to game.
That was all before Charles McNeil, a math teacher from Chicago, invented the concept of the point spread. An avid gambler, McNeil created what he called “wholesaling odds” and started his own bookmaking operation in the 1940s. He started out offering this new style of betting on football, but his business model grew to include basketball.  McNeil changed the way sports betting was done, and his legacy lives on today in what we now call the point spread.