Gambling always involves a negative expected return-the house always has the advantage.Payouts still take into account the odds of a game, with the teams split into two neatly organized categories: favorite and underdog.A money line bet is considered to be the least complicated kind of bet because what is at stake is so straightforward: who will win.The term “money line” represents the payouts for winning the bet, with a negative integer for the underdog and a positive one for the favorite. Money line bets are bets placed on a game’s conclusion.