- Lightweight
- Brazil
« The Legend »
Mairon Santos Record, stats and next fight
17-1-0 (W-L-D)
9Wins by knockout
0Wins by submission
0First round finishes
Stats and record
18Pro fights
53%Finish rate
17Wins
1Losses
Wins by method
Losses by method
Loss breakdown not available.
Profile
- Age
- 26 years
- Born
- June 10, 2000
- Birthplace
- Duque de Caxias, Rio de Janeiro
- Height
- 5'9" (175 cm)
- Weight
- 154 lbs (70 kg)
- Division
- Lightweight
- Team
- Xtreme Couture
Analysis
Mairon Santos won season 32 of The Ultimate Fighter in 2024, which opened the door to the UFC’s lightweight division. The Brazilian has since posted a professional record of 17 wins against a single loss.
Born on June 10, 2000, in Duque de Caxias, in the state of Rio de Janeiro, Mairon Santos discovered MMA watching the fight between Anderson Silva and Chael Sonnen. He turned professional in 2019 on the Brazilian regional circuit, notably with Shooto Brazil, where he fought his first bouts against local opponents. In 2021, he left Brazil alone for Las Vegas to join Xtreme Couture, where he now does the bulk of his training alongside a group of professional fighters from several countries. That change of training environment preceded his rise through North American circuits, first in LFA and then the UFC.
UFC Career
Mairon Santos first strung together two wins in LFA, including a unanimous decision over Rafael Barbosa in March 2023, before joining season 32 of The Ultimate Fighter at featherweight. He won the final against Kaan Ofli by second-round KO on August 24, 2024, earning a UFC contract in the process. The promotion then placed him at lightweight, a heavier division than the one he competed in on the show. There he beat Francis Marshall by split decision on March 8, 2025, at UFC 313, then Sodiq Yusuff by unanimous decision on May 17, 2025. His most recent fight came against Muhammad Naimov on December 6, 2025, at UFC 323, stopping him by third-round TKO. Those three straight lightweight wins keep him unbeaten since joining the organization. His only professional loss dates back to February 2022, against Dan Argueta in LFA, by third-round TKO, before his run on The Ultimate Fighter. A fight against Akbar Abdullaev is reportedly planned for December 2026, pending confirmation by the promotion.
Fighting Style
Mairon Santos builds his game around boxing and kickboxing. Of his 17 professional wins, 9 came by KO or TKO and none by submission, confirming a striker’s base rather than a wrestling or ground-specialist profile. The other 8 wins came by decision, including a split decision over Francis Marshall, a sign of his ability to hold up in closely contested fights against UFC-level opponents. His fastest win, a second-round KO in the Ultimate Fighter final, illustrates the punching power that remains his main asset as he entered the lightweight division, a tougher weight class than the featherweight division where he started the show.
Record
- Professional record: 17 wins, 1 loss, 0 draws
- Wins by KO or TKO: 9
- Wins by submission: 0
- Wins by decision: 8
- Title: winner of The Ultimate Fighter season 32, featherweight, August 2024
- Current status: unbeaten in the UFC since joining the organization, three wins at lightweight
Fact File
- Full name: Mairon Santos Alves
- Nickname: The Legend
- Born: June 10, 2000, in Duque de Caxias, state of Rio de Janeiro, Brazil
- Nationality: Brazilian
- Height: 5’9″ (175 cm)
- Reach: not disclosed in available sources
- Division: lightweight
- Team: Xtreme Couture, Las Vegas
- Coach: not specified in available sources
- Base: boxing and kickboxing
Sources
Data updated on September 28, 2026. Record and measurements cross-checked against official results and Wikipedia. Text written by the MMA Official editorial team.