Early career Starting his professional career in 2012, two months after the death of his mentor, Nascimento got a perfect 8–0 record on the regional Brazilian scene, finishing his opponent in all eight bouts, 4 by submission and 2 by TKO. Nascimento was invited to
Dana White's Contender Series 22 and faced Michal Martinek on July 30, 2019. He won the bout via arm triangle in the first round, gaining a UFC contract in the process.
Ultimate Fighting Championship Nascimento faced
Don'Tale Mayes on May 16, 2020, at
UFC on ESPN: Overeem vs. Harris. He won the bout via second round rear naked choke. Nascimento faced
Chris Daukaus on October 11, 2020, at
UFC Fight Night: Moraes vs. Sandhagen. He lost the bout via first minute KO. Nascimento was scheduled to face
Alan Baudot on May 22, 2021, at
UFC Fight Night: Font vs. Garbrandt. However, after Baudot was injured, the bout was moved to
UFC on ESPN: Makhachev vs. Moisés held on July 17, 2021. Nascimento won the fight via technical knockout in round two. This win earned him the
Performance of the Night award. However, Nascimento's urine test from the fight tested positive for
ritalinic acid, a metabolite of psychostimulant drugs
methylphenidate and
ethylphenidate. As a result, Nascimento received a six-month suspension, retroactive to the test. He was also fined a total of $1,945.36, for the violation and subsequent legal fees. The bout was also overturned to a no contest. Nascimento was scheduled to face
Tanner Boser on April 23, 2022, at
UFC Fight Night 205. However, Nascimento withdrew from the event for unknown reasons, and he was replaced by
Alexander Romanov. Nascimento was rebooked against
Tanner Boser for September 17, 2022, at
UFC Fight Night: Sandhagen vs. Song. Nascimento won the fight via split decision. Nascimento faced
Ilir Latifi on May 20, 2023, at
UFC Fight Night 223. He won the fight via split decision. Nascimento faced
Don'Tale Mayes in a rematch on November 4, 2023, at
UFC Fight Night 231. He won the fight via unanimous decision. Nascimento faced former
UFC Heavyweight Championship challenger
Derrick Lewis on May 11, 2024, at
UFC on ESPN 56. After being knocked down, he lost the fight via technical knockout from ground punches in the third round. Nascimento faced
Alexander Romanov on November 2, 2024, at
UFC Fight Night 246. Nascimento lost the fight via unanimous decision. On November 8, 2024, it was reported that Nascimento was removed from the UFC roster.
Professional Fighters League Nascimento debuted with the
Professional Fighters League at
PFL 4 on May 1, 2025, and defeated Abraham Bably by split decision. In the semifinals, Nascimento faced
Oleg Popov at
PFL 7 on June 27, 2025. He lost the fight via unanimous decision. Nascimento faced
Alexander Romanov in a rematch at
PFL Chicago: Pettis vs. McKee, on April 11, 2026. He lost the bout via submission in the second round. == Championships and accomplishments ==