March 1, 2008 -- History was made in Columbus, Ohio when UFC champion Anderson Silva and Pride champion Dan Henderson met to not only unify the middleweight championship, but to battle it out for pound for pound supremacy. Plus, longtime heavyweight contender Heath Herring tries to keep his title hopes alive against devastating French striker Cheick Kongo. Also in action are UFC stars Diego Sanchez, Josh Koscheck, Chris Leben, Yushin Okami, and the comeback of former middleweight champion Even Tanner. Event Bouts: - Anderson Silva Vs. Dan Henderson - Cheich Kongo Vs. Heath Herring - Chris Leben Vs. Alessio Sakara - Evan Tanner Vs. Tushin Okami - Jon Fitch Vs. Chris Wilson - Andrei Arlovski Vs. Jake O'Brien - Luke Cummo Vs. Luigi Fioravanti - Josh Koscheck Vs. Dustin Hazelett - Diego Sanchez Vs. David Bielkheden - Jorge Gurgel Vs. John Halverson