It means a money line. In a fight, there will usually be a favourite and an underdog. If you bet on an underdog, there will always be a “+” sign, and if you win, you will get more than you bet. Let’s take a fight between Floyd Mayweather and Mike Tyson, as an example. If you bet €10 on Vinnie with a money line of +120, your return will be €12. +120 means that for every €1 you bet, you win €1.20.n