UFC on Fox 23 is a mixed martial arts event that will be held by the Ultimate Fighting Championship with a Women's Bantamweight main event card between Valentina "The Bullet" Shevchenko (58-2-1, 21 KO's) fighting out of Lima, Peru and her opponent Julianna "The Venezuelan Vixen" Peña (8-2-0, 3 KO's) fighting out of Spokane, Washington. This is the preliminary card and it is airing live tonight from the Pepsi Center in Denver, Colorado.

The 6 scheduled preliminary bouts are as follows:

Bantamweight: Raphael Assunção vs. Aljamain Sterling

Light Heavyweight: Luis Henrique da Silva vs. Jordan Johnson

Light Heavyweight: Marcos Rogério de Lima vs. Jeremy Kimball

Middleweight: Nate Marquardt vs. Sam Alvey

Middleweight: Eric Spicely vs. Alessio Di Chirico

Welterweight: Bobby Nash vs. Li Jingliang

UFC Fight Night 104: Bermudez vs. Korean Zombie is a mixed martial arts event that will be held by the Ultimate Fighting Championship Featherweight main event card between Dennis "The Menace" Bermudez (16-5-0, 4 KO's) fighting out of Lindenhurst, New York and his opponent Chan Sung Jung "The Korean Zombie" (14-4-0, 3 KO's) fighting out of Seoul, South Korea. This card is airing live tonight from the Toyota Center in Houston, Texas. This is the preliminary card of bouts before the main event card.

The scheduled Preliminary bouts are as follows:

Bantamweight: Ricardo Ramos vs. Michinori Tanaka

Featherweight: Chas Skelly vs. Chris Gruetzemacher

Heavyweight: Adam Milstead vs. Curtis Blaydes

Women's Catchweight (117.5 lbs): Tecia Torres vs. Bec Rawlings