UFC Fight Night: Florian vs. Lauzon[2] (also known as UFC Fight Night 13) was a mixed martial arts (MMA) event held by the Ultimate Fighting Championship (UFC) on April 2, 2008,[3] at the Broomfield Event Center in Broomfield, Colorado, United States.

Instead of scheduling a two-hour program usually set for UFC Fight Night cards, the event was a three-hour broadcast, a change due to a petition from Sherdog Forums and a letter-writing campaign by MMA fans to Spike.

[5] Stephan Bonnar was originally slated to take on Matt Hamill, but was forced to withdraw when he suffered a complete tear of his left collateral knee ligament during training.

[7] On March 20, 2008, the UFC website announced that newcomer Ryan Roberts was to make his octagon debut on short notice to face Marcus Aurélio as a replacement for the injured Spencer Fisher.

This event also marked the first bout of a series of fights between Frankie Edgar and Gray Maynard.