UFC Fight Night: Diaz vs. Neer (also known as UFC Fight Night 15) was a mixed martial arts event held by the Ultimate Fighting Championship (UFC) on September 17, 2008, at the Omaha Civic Auditorium in Omaha, Nebraska.

[1] The event served as the lead-in to the premiere of The Ultimate Fighter: Team Nogueira vs.

Jeremy Horn was originally scheduled to face Wilson Gouveia on this card, but was injured.

[3] Below are the fighter base salaries for the event.

The total base fighter payroll was $305,000.