In June 2018, on the day New Jersey legalized sports betting, I met someone at Monmouth Park Racetrack who did this sort of thing for a living and he explained how the good money was already long spent by then. The more available information, the more refined the odds, the harder it is to nab some kind of inefficiency in the market.
But I wonder how that changes during a year like this, where information is sparse to begin with (and if you’re in Green Bay, somehow illegal). We have less of an idea of how things are going to work.