MMA Weekly brought word of the change earlier today.
Benavidez will look to come back strong after losing his bid to become WEC bantamweight champion in a rematch with Dominick Cruz back at WEC 50 in August.
"Joe B-Wan Kenobi" Benavidez has only two losses on his record, both of them to Cruz. Benavidez was coming off the biggest win of his career, submitting former bantamweight title holder Miguel Angel Torres going into the championship bout.
Fabiano is looking to extend his winning streak to three in a row. After being submitted by Mackens Semerzier back in December of last year, "The Silencer" defeated both Clint Godfrey and Frank Gomez by unanimous decision.
Two critical 145-pound match ups were also made official -- Chad Mendes will tangle with Javier Vazquez and Josh Grispi will collide with Erik Koch -- that could determine the division's next number one contender.
Keep it locked in to MMAmania.com for more WEC 52 updates as they become available.