I'm new to the world of sports betting and am having a tough time calculating and edge on my bets. I've been trying to follow this formula:
(probability of winning) x (amount won per bet) - (probability of losing) x (amount lost per bet)
my question is: where do you find the probability of winning? I've seen things like Boston has an 54% chance of beating philly who has a 46% chance. But where do you find these percentages at??? Any help is greatly appreciated.