Michigan got into the game with in-person wagering at the MGM Grand Detroit in early March of 2020. The state has already hit its limit of 15 online sportsbooks, because, you know, if there were 20 it might lead to problems. With a sizeable population and sports teams from every major league sport and some major colleges, the locals will have a betting smorgasbord and the results so far place Michigan in the top 10 of legal states in terms of monthly handle.