Well there isn't a lot of history but NBB has beef with SoCal. First it was the stinky Anaheim Outlaws but then they got folded or moved or something and now there's a new SoCal team. The San Diego Tidal. They are the closest team to Vegas and even though they are new to the league the rivalry has been fierce. Multiple times, riot police has had to be called into the stadium and full-scale brawls regularly happen before games. It's like England football hooliganism on steroids. The rivalry was especially heated in S76, the first playoff series between SDT and NBB. NBB dominantly won the series 4-1. It was unfortunate that the teams didn't meet for the S78 playoffs but thats fine. There used to be a rivalry with QCC. but that expansion is so far in the past that NBB fans don't really care about QCC anymore.