Allan Nascimento’s professional mixed martial arts career began in Brazil in 2011, where he built his early record by winning nine of his first 10 bouts.
Allan Nascimento, a Brazilian flyweight fighter who competed under the UFC banner, died on Monday at age 34 after an apparent heart attack while he slept, the UFC organization said in a post on X.
This morning, Monday, August 3rd, our beloved flyweight fighter, Allan Nascimento, was found unresponsive after suffering an apparent heart attack in his sleep. Despite the efforts of the responding medical team, he was pronounced deceased at the scene.
— UFC (@ufc) August 3, 2026
Our thoughts and deepest… pic.twitter.com/vlaBaBOyJr
Nascimento was found unresponsive, and a responding medical team was unable to revive him before he was pronounced dead at the scene. “Our thoughts and deepest condolences are with Allan’s family, friends, teammates, and loved ones during this incredibly difficult time,” the organization said.
Career Spanned More Than a Decade
Nascimento’s professional mixed martial arts career began in his native country, Brazil, in 2011, where he built his early record by winning nine of his first 10 bouts. In 2018, he appeared on “Dana White’s Contender Series,” losing in a split decision to Raulian Paiva before eventually earning a spot on the UFC roster.
After his loss in 2021 via a split-decision with Tagir Ulanbekov, Nascimento rebounded from that setback with four straight victories over Jake Hadley, Carlos Hernandez, Jafel Filho and Cody Durden, earning Performance of the Night bonuses for his wins against Hernandez and Durden.
Nascimento’s final professional tally stood at 22 wins and 7 losses. His most recent bout came roughly six weeks before his death at UFC Vegas 119, where he fell to Mitch Raposo by split decision.
By the Numbers
Statistics published by the UFC show Nascimento landed 3.20 significant strikes per minute at 51 percent accuracy, while absorbing 2.53 per minute and defending 53 percent of opponents’ strikes. He averaged 1.04 takedowns per 15 minutes with 20 percent accuracy and a 41 percent takedown defense rate, and attempted 0.9 submissions per 15 minutes on average. He stood 5-foot-8, fought at 125 pounds, carried a 69-inch reach and competed from an orthodox stance, according to the UFC’s official fighter profile.
Second MMA Death in Recent Months
Nascimento’s death follows that of another mixed martial arts veteran, Jay Silva, who died in late May at age 45. Silva’s passing was confirmed by his former coach Ed Buckley, after FAME MMA, the last organization Silva fought for, first announced the news. A cause of death for Silva was not disclosed.
Silva finished his nearly two-decade career with a 12-13-1 record, including two UFC appearances in September 2010 and January 2011, where he lost unanimous decisions to CB Dolliway and Chris Leben.
Buckley wrote on Facebook that Silva’s death “caught me off guard,” adding, “Learning that one of my old fighters Jay Silva passed away yesterday… may you R.I.P. my friend”. Former UFC fighter Uriah Hall also mourned Silva on Instagram, writing, “Lost a friend. Lost a brother. My condolences to the family. Rest easy, champ. A hard reminder… life is shorter than we think.”
