A professional since 2009, Munhoz began his career competing in local promotions in his native São Paulo, Brazil before moving to the United States in 2011. He competed in several regional promotions across the United States, compiling an undefeated record and eventually became Resurrection Fighting Alliance bantamweight champion on August 16, 2013, after defeating notable veteran Jeff Curran by split decision. Munhoz defended his title for the first time on January 24, 2014, defeating Billy Daniels via first round submission. After the victory over Daniels, Munhoz signed with the UFC in early February 2014.
Ultimate Fighting Championship
2014
Munhoz made his promotional debut on February 22, 2014, as a short notice replacement for an injured Francisco Rivera and faced top contender Raphael Assunção at UFC 170. Assunção defeated Munhoz via unanimous decision. Munhoz faced promotional newcomer Matt Hobar on May 31, 2014, at. Munhoz defeated Hobar via first round TKO. Munhoz faced Jerrod Sanders on October 4, 2014, at UFC Fight Night 54. He won the fight via submission in the first round. A few months later, it was revealed that Munhoz tested positive for elevated levels of testosterone. Munhoz's camp requested testing documentation and didn't receive it until three months later. He said a review of the results by anti-doping specialist Paul Scott determined that his testosterone was not, in fact, elevated, coming in at 850 ng/mL, or on the high end of the normal range for men his age. He admitted to using two supplements allowed by the UFC that may have elevated his testosterone, but not outside the legal limit. On November 4, 2015, Munhoz was suspended for one year retroactive to his fight due to testosterone metabolites of an exogenous origin and his win was changed to a no-contest.
Munhoz next faced Russell Doane on July 7, 2016, at. He won the fight via submission in the first round and was awarded a Performance of the Night bonus. Munhoz faced Justin Scoggins on November 19, 2016, at UFC Fight Night 100. He won the bout submission in the second round and was awarded a Performance of the Night bonus.
2017
Munhoz faced Damian Stasiak on May 28, 2017, at. He won the fight by unanimous decision. Munhoz faced Rob Font on October 28, 2017, at. He won the fight via submission in round one. This win earned him a Performance of the Night bonus award.
2018
Munhoz was expected to face John Dodson at on February 3, 2018. However, Munhoz missed weight by four pounds over the bantamweight non title fightupper limit of 136 pounds, and Dodson declined to take the fight and the fight was cancelled. The fight was rescheduled to UFC 222 on March 3, 2018. Munhoz lost the fight via split decision. Munhoz faced Brett Johns August 4, 2018, at UFC 227. He won the fight by unanimous decision. Munhoz faced Bryan Caraway on November 30, 2018, at. He won the fight via technical knockout in round one.
2019
Munhoz faced former UFC Bantamweight ChampionCody Garbrandt on March 2, 2019, at UFC 235. He won the fight via knockout in the first round. The win also earned Muhnoz his first Fight of the Night bonus award. Munhoz faced Aljamain Sterling on June 8, 2019, at UFC 238. He lost the fight by unanimous decision.
2020
Munhoz was scheduled to face former UFC Lightweight ChampionFrankie Edgar on July 15, 2020, at. However, on July 6, it was announced that Munhoz was pulled from the bout after testing positive for COVID-19. The pair is now scheduled to meet on August 22, 2020 at UFC Fight Night 175.
