Season 33 of "The Ultimate Fighter" premieres Tuesday night at 10 p.m. Looking back at 20 years of "The Ultimate Fighter," the best seasons have featured coaching rivalries. Sonnen: "The Ultimate Fighter" is the toughest tournament in all of sports. When you watch "The Ultimate Fighter," you watch these guys fight in a tournament. It was a very fair question, and the guys that come through "The Ultimate Fighter" have all answered it, regardless of outcome.