Brazilian middleweight Bruno Santos has been forced out of this summer’s UFC 175 event, and Trevor Smith (11-5 MMA, 1-2 UFC) has agreed to step in and face Chris Camozzi (19-7 MMA, 6-4 UFC).

UFC officials today announced the new plans, which were necessitated after Santos suffered an injury in training.

Featuring a pair of championship fights, UFC 175 takes place July 5 at Mandalay Bay Events Center in Las Vegas. The main card airs on pay-per-view following prelims on FOX Sports 1 and UFC Fight Pass.

Camozzi vs. Smith is likely to be part of the prelims, though an official bout order has yet to be released.

Camozzi, who joined the UFC after appearing on “The Ultimate Fighter 11″ in 2010, finds himself in a must-win situation. Although he fought his way back into the organization after a 2011 released, and though he eventually put together a four-fight winning streak in the UFC, the 27-year-old has since suffered back-to-back losses to Ronaldo “Jacare” Souza and Lorenz Larkin.

Meanwhile, Smith is also in need of a victory. A four-time Strikeforce veteran, “Hot Sauce” came up on both sides of two split-decision results to open his UFC career, defeating Brian Houston but falling short against Ed Herman. More recently. Smith suffered a 45-second TKO loss to Thales Leites at UFC Fight Night 39 in Abu Dhabi.

With the addition, UFC 175 now includes:

Champ Chris Weidman vs. Lyoto Machida – for middleweight title

Ronda Rousey vs. Alexis Davis – for women’s bantamweight title

Wanderlei Silva vs. Chael Sonnen

Alex Caceres vs. Urijah Faber

Matt Mitrione vs. Stefan Struve

Uriah Hall vs. Thiago “Marreta” Santos

Chris Camozzi vs. Trevor Smith

Guilherme Vasconcelos vs. Luke Zachrich

Ildemar Alcantara vs. Santiago Ponzinibbio

For more on UFC 175, stay tuned to the UFC Rumors section of the site.

(Pictured: Urijah Faber)