42. Henry Cejudo
Cejudo made waves when he became the first UFC flyweight to defeat Demetrious Johnson. Then he became a two-weight champion by beating Marlon Moraes for 135-pound gold. He defended that title once before announcing a shocking retirement (via SB Nation).

“Triple C” tried to use this as a bargaining technique but this was a massive mistake. The UFC hates when champions vacate and try to extort them so they froze him out. He sat out for over two years because the UFC wouldn’t pay him what he wanted.