I know I'm being dumb here but trying to figure out an edge for a possible bet. It involves the amount of times one is right about the favorite winning in horse racing.
The fave in horse racing wins about 35% of races. For this, assume the average odds across all favorites was 2.5ish. If you wanted to create a bet/lay system for when you have an opinion on if the favourite is legit or not, how often would you need to be right, whether deciding to bet or lay, to have an edge?