Thiago Vieira
UFC DebutNickname“Monstro”
Record
Streak
L1
Age
Date of birth
- Fighting out of
- Sao Paulo, Sao Paulo
- Born
- Brazil
- Camp
- 011 MMA Team
- Weight class
- Middleweight
- Height
- 6'2" · 188 cm
Before the UFC
Thiago Vieira makes their UFC debut
Our striking, grappling, and schedule metrics are measured from UFC fights, so they come online after this bout. Here is the career they bring in — and how live the opposition has been.
Pre-UFC opposition
StrongOpponents' combined record
158-94-1
.627 win rate
Winning-record opponents
11 of 15
carried winning pro records
Pro bouts faced
18
15 opponents with records on file
A descriptive read of the non-UFC slate from opponents’ full career pro records — not a UFC-grade Schedule Score.
UFC fight history
No UFC bouts on record yet.
Outside the UFC
across 18 bouts · 17 promotions · wins by 11 KO · 1 sub011 MMA Team · Money Moicano MMA · Bison Kombat 4 · LFA · Demolidor Fight MMA 17 +12
| Res | Opponent | Outcome | Finish | Rd | Time | Promotion | Date |
|---|---|---|---|---|---|---|---|
| L | Miguel Porto5-3 | KO/TKO | Punches | R2 | 4:10 | Money Moicano MMA | May 23, 2026 |
| W | KO/TKO | Retirement | R1 | 4:09 | Bison Kombat 4 | Jul 12, 2025 | |
| L | Rodolfo Bellato13-3-1 | Submission | Triangle Choke | R1 | 4:58 | LFA | Mar 11, 2022 |
| W | KO/TKO | Punch | R1 | 3:46 | Demolidor Fight MMA 17 | Jan 15, 2022 | |
| L | Rene Pessoa26-13 | Submission | Rear-Naked Choke | R1 | 2:31 | SFT 8 | Dec 15, 2018 |
| L | Andrzej Grzebyk22-9 | KO/TKO | Punches | R3 | 4:56 | FEN 21 | May 25, 2018 |
| W | KO/TKO | Punches | R1 | 1:35 | Thunder Fight 13 | Dec 22, 2017 | |
| W | David Teixeira6-4 | KO/TKO | Punches | R1 | 0:54 | Pinda Fight | Nov 18, 2017 |
| L | Carlston Harris19-8 | KO/TKO | Punches | R2 | 1:04 | Brave CF 3 | Mar 18, 2017 |
| L | KO/TKO | Punches | R1 | 4:01 | Brave CF 1 | Sep 23, 2016 | |
| W | Angel Marcelo Gonzalez Chaparro | Submission | Rear-Naked Choke | R1 | 0:19 | MFC | Mar 12, 2016 |
| W | Itamar Rosa10-5 | KO/TKO | Kick to the Body | R1 | 1:03 | Aspera FC 29 | Dec 5, 2015 |
| W | Diego Cruz | KO/TKO | Punches | R2 | 1:56 | AFC | Jun 26, 2015 |
| W | KO/TKO | Punches | R1 | 1:31 | 011 MMA Team | Apr 18, 2015 | |
| W | Sergio Ferreira4-2 | KO/TKO | Punches | R2 | 2:14 | URF | Oct 26, 2013 |
| W | Walter Bruce0-3 | KO/TKO | Punches | R1 | 1:54 | SFT 1 | Sep 20, 2013 |
| W | KO/TKO | Punch | R1 | 1:19 | 011 MMA Team | Aug 10, 2013 | |
| W | Leonardo Farias | KO/TKO | Punches | R2 | 0:46 | NF | Apr 20, 2013 |
Non-UFC bouts (regional/other promotions) and Dana White’s Contender Series — shown for context only, excluded from Schedule Score, striking/grappling rates, and every UFC-scoped metric.
Amateur
2-0across 2 amateur bouts · 1 promotionCF
| Res | Opponent | Outcome | Finish | Rd | Time | Promotion | Date |
|---|---|---|---|---|---|---|---|
| W | Matheus Machuca1-0 | KO/TKO | Punches | R2 | 2:16 | CF | Mar 23, 2013 |
| W | Eduardo Santos0-1 | Decision | Unanimous | R2 | 3:00 | CF | Mar 31, 2012 |
Amateur (pre-professional) bouts — shown for context only and excluded from the professional record and every UFC-scoped metric.