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. It was also the first UFC pay-per-view broadcast in High-Definition.

Lyoto Carvalho Machida is a Brazilian professional mixed martial artist and karateka. He formerly competed for the Ultimate Fighting Championship (UFC), where he was a former UFC Light Heavyweight Champion, as well as a UFC Middleweight Championship title challenger. He most recently competed in Bellator MMA in the Light Heavyweight and Middleweight divisions.