By Daniel Kline Something big has happened that benefits Caesars, MGM, and Wynn. Las Vegas has gone from Sin City to Sports City. Once off-limits to major sporting events, Las Vegas has become the hub of the sports world. Basically, if you need your sporting event to be seen as being massive then bring it to the Las Vegas Strip, or at least adjacent to that famous stretch of road, and the eyes of the world will be on you. Everything changed for Las Vegas when the U.S,. Supreme Court made legalizing sports betting a state-by-state issue. That allowed more states to add sports betting and instea…