There shouldn't be sports gambling at all. It is so ripe for abuse on so many different levels. Teams, sports organizers and associations, players, referees, and all of those peoples friends and families all have an avenue for trying to set matches. Just look at boxing, it is/was so pervasive and abused that nearly every boxing related movie in existence has people trying to set matches and take falls for fraudulent profit.

And we haven't even gotten into the problems we already have with gambling in general which is just the cherry on top.