Drew Fickett (Pictures) has replaced an injured Jeff Joslin (Pictures) as Chris Lytle (Pictures)'s opponent on July 7, reports Sherdog.com's Mike Sloan. Fickett (29-5-0) last fought in April, defeating Japan's Keita Nakamura (Pictures) on points. Lytle (22-14-5) looks to rebound following a March decision loss to former UFC 170-pound champion Matt Hughes (Pictures).

Lytle-Fickett compliments the undercard of UFC 73 "Stacked," which features two UFC title fights at the ARCO Arena in Sacramento, Calif.

Anderson Silva is set to defend his middleweight belt against Nathan Marquardt (Pictures), and Sean Sherk (Pictures) makes his first defense of the lightweight belt when he steps in against Hermes Franca (Pictures). Also, Rashad Evans (Pictures) is slated to fight Tito Ortiz (Pictures) in a light heavyweight contest, and it's expected that former PRIDE heavyweight champion Antonio Rodrigo Nogueira (Pictures) will make his Octagon debut against Heath Herring (Pictures).