5. Changing names in record time
Believe it or not, Oakland wasn’t always the home of The Oakland Raiders. Of course, at one point in time, they were The Los Angeles Raiders, but they had another name before The Oakland Raiders even left for Los Angeles. In fact, the team held a "name your team" contest for fans and became known as The Oakland Senors.
The team was then turned into a laughingstock by the rest of the league, which prompted a name change only a few days later.