UFC 78: Validation

UFC 78: Validation was a mixed martial arts event held by the Ultimate Fighting Championship (UFC), that took place on November 17, 2007 at the Prudential Center in Newark, New Jersey.

Validation was the first UFC event held in New Jersey since June 4, 2005's UFC 53: Heavy Hitters in Atlantic City.

The main event featured The Ultimate Fighter 2 heavyweight winner Rashad Evans against The Ultimate Fighter 3 light heavyweight winner Michael Bisping in a light heavyweight contest. This was Bisping's last fight before dropping to Middleweight.

Additionally, PRIDE veterans Ryo Chonan and Akihiro Gono both made their UFC debuts. Both fighters fought at 183 pounds in Japan, but with the UFC's inclusion of the 170 pound division each fighter moved down to fight at welterweight. Cuban judoka Hector Lombard was also scheduled to debut on the event but did not participate due to visa issues. Karo Parisyan instead faced Ryo Chonan, and Thiago Alves fought Chris Lytle.