UFC Fight Night 83 is a scheduled mixed martial arts welterweight bout main event card between Donald "Cowboy" Cerrone (28-7-1, 5 KO's) from Denver, Colorado going up against Alex "Cowboy" Oliveira (14-2-1, 9 KO's) from Rio de Janeiro, Brazil. This card is being broadcast live from the Consol Energy Center in Pittsburgh, Pennsylvania.

The Scheduled undercard bouts are as follows:

Catchweight (142 lbs): Cody Garbrandt vs. Augusto Mendes

Featherweight: Dennis Bermudez vs. Tatsuya Kawajiri

Lightweight: James Krause vs. Shane Campbell

Middleweight: Derek Brunson vs. Roan Carneiro

Middleweight: Chris Camozzi vs. Joe Riggs