To begin with, I am to be able to assume if you are making a sports wager or betting on a sports game you do it somewhere legal (i.e. So the European Roulette has your home edge of 2.63%, American Roulette comes with a house edge of 5.26%. https://www.localtrusted.co.uk/wiki/index.php?title=How_To_Play_Online_Casino_Craps