John Halverson

UFC 67: All or Nothing was a mixed martial arts event held by Ultimate Fighting Championship. The event was held Saturday, February 3, 2007 at the Mandalay Bay Events Center on the Las Vegas Strip in Nevada. The main event was Travis Lutter vs. Anderson Silva for the middleweight title, however Lutter was not able to make weight and the fight was changed to a non-title contest.

UFC 82: Pride of a Champion was a mixed martial arts (MMA) event that took place on 1st March, 2008 at the Nationwide Arena in Columbus, Ohio. The main event was a UFC & Pride FC middleweight title unification match between UFC middleweight champion Anderson Silva and PRIDE FC welterweight champion Dan Henderson.