This is probably the biggest cold take of all time, but The Minnesota Timberwolves are, by nose, the worst active professional sports franchise of all time.
Not only do they hold the worst regular season Win/Loss % of all time, but they also hold the worst playoff win % of all time.
Additionally, out of every active Major 4 sports franchise, they hold the worst win % of anyone, even worse than the Tampa Bay Buccaneers' legendary 70s, 80s, and 90s. At least the Buccaneers have two Super Bowl titles to show for it though. The Lions and their legendary 50-year stretch of failure aren't as bad as the Timberwolves' 34-year existence.