Mateusz Rębecki, head-and-shoulders portrait
Rebeasti

Mateusz Rębecki

Lightweight
Brazilian Jiu-Jitsu
Former FEN champion
Record Record: 20-5-0
Wins
20
Losses
5
Draws
0
9KO/TKO
7Sub
4Dec
View full record ↓

Vitals

Height, reach, and career background.

Age33
Height1.70 m
Reach168 cm
NationalityPoland
TeamAmerican Top Team
Weight classLightweight
Active2014–present

Record

Tap any fight for the breakdown.

LossSUB
Opponent: Grant Dawsonrear-naked chokeR3 4:42
UFC 328
9 May 2026

Rębecki made Dawson work through a hard, scrappy lightweight fight, but the constant grappling finally turned against him late. Dawson found the back in the third round and finished the choke, leaving Rębecki with his fourth loss in five fights despite another high-effort performance.

Key moments

  • Lost to Grant Dawson by rear-naked choke at 4:42 of round three.
  • The defeat dropped Rębecki to 20-5 overall and 3-4 in the UFC.
  • He forced a difficult pace early before Dawson's late grappling took over.
LossDEC
Opponent: Ľudovít KleinmajorityR3 5:00
UFC 321
25 Oct 2025

Rębecki stayed competitive in a close three-round fight with Klein, but the decision went against him and extended his uneven UFC stretch. Even in defeat, the bout reinforced the same pattern: he is dangerous in exchanges, but not always efficient enough to win the margins over disciplined opposition.

Key moments

  • Dropped a majority decision to Ludovit Klein over three rounds.
  • The fight earned another Fight of the Night bonus for Rębecki.
  • It gave him back-to-back decision losses before the Dawson bout.
LossDEC
Opponent: Chris DuncanunanimousR3 5:00
UFC on ESPN: Taira vs. Park
2 Aug 2025

Rębecki and Duncan produced the kind of blood-and-guts fight Rębecki often invites, but Duncan did enough cleaner work over three rounds to take the cards. The loss hurt in the rankings race, even if the performance again made clear how hard Rębecki is to discourage.

Key moments

  • Lost a unanimous decision to Chris Duncan in a bloody co-main event.
  • The fight earned Fight of the Night honors despite the defeat.
  • It followed the signature win over Myktybek Orolbai but stalled his momentum.
WinDEC
Opponent: Myktybek OrolbaisplitR3 5:00
UFC 308
26 Oct 2024

Rębecki's war with Orolbai became one of the year's defining action fights, with both men forcing wild scrambles and punishing exchanges. Rębecki edged the split decision in a catchweight thriller and left Abu Dhabi with the kind of credibility boost that only comes from surviving a fight like that.

Key moments

  • Beat Myktybek Orolbai by split decision in a 160 lb catchweight bout.
  • The fight earned Fight of the Night and was widely treated as one of 2024's best UFC wars.
  • It snapped the damage from the Carlos Diego Ferreira loss.
LossTKO
Opponent: Carlos Diego FerreirapunchesR3 4:51
UFC on ESPN: Lewis vs. Nascimento
11 May 2024

Rębecki started fast and gave Ferreira plenty to handle, but the veteran survived the early storm and turned the fight late. Ferreira's third-round finish was a costly setback because it exposed how much energy Rębecki sometimes has to burn to keep his preferred pace.

Key moments

  • Was stopped by Carlos Diego Ferreira at 4:51 of round three in St. Louis.
  • Rębecki won much of the early fight before fading late against the veteran.
  • It was his first loss inside the UFC.
WinSUB
Opponent: Roosevelt RobertsarmbarR1 3:08
UFC 295
11 Nov 2023

Rębecki took a late replacement in Roberts and still found the kind of aggressive finish that has defined most of his career. Once he got the fight to the mat, he transitioned quickly to the armbar and collected his third straight UFC win.

Key moments

  • Rębecki submitted Roosevelt Roberts with an armbar at 3:08 of round one.
  • Roberts stepped in after Nurullo Aliev withdrew from the event.
  • The fight went ahead at catchweight after Roberts missed the lightweight limit.
WinTKO
Opponent: Loik RadzhabovpunchR2 2:36
UFC on ABC: Emmett vs. Topuria
24 Jun 2023

Rębecki's second UFC outing turned into a showcase of his pressure and durability, as he weathered Radzhabov's bursts before breaking him down in round two. The stoppage gave him his first UFC finish and confirmed that his pace could still punish opponents at this level.

Key moments

  • Rębecki stopped Loik Radzhabov at 2:36 of round two.
  • The bout proceeded at catchweight after Radzhabov came in heavy.
  • It was Rębecki's first finish inside the UFC.
WinDEC
Opponent: Nick FioreunanimousR3 5:00
UFC Fight Night: Strickland vs. Imavov
14 Jan 2023

Rębecki's UFC debut did not end in a finish, but he still showed the same pressure-first identity by outworking Fiore over three rounds. The decision win mattered because it proved he could start patiently when needed after years of finishing people quickly on the regional circuit.

Key moments

  • Rębecki beat Nick Fiore by unanimous decision in his UFC debut.
  • Fiore stepped in after Omar Morales withdrew from the original booking.
  • The win moved Rębecki to 17-1 as a professional.
WinSUB
Opponent: Rodrigo Lídiorear-naked chokeR1 3:05
Dana White's Contender Series 52
30 Aug 2022

Rębecki entered Contender Series with a long regional résumé and removed any doubt by finishing Lídio in the opening round. The rear-naked choke earned him a UFC contract and closed the door on one of Europe's most dominant lightweight title runs.

Key moments

  • Rębecki submitted Rodrigo Lidio with a rear-naked choke at 3:05 of round one.
  • The victory earned Rębecki a UFC contract on Contender Series.
  • He arrived with seven successful FEN title defenses behind him.
WinDEC
Opponent: Arkadiy OsipyanunanimousR5 5:00
Fight Exclusive Night 37
27 Nov 2021

Rębecki's final FEN title defense asked him to do something rare in his career: go the full five rounds. He handled that assignment cleanly against Osipyan, retaining the belt on the cards and closing his promotional reign with a seventh successful defense.

Key moments

  • Rębecki beat Arkadiy Osipyan by unanimous decision after five rounds.
  • The win marked his seventh successful defense of the FEN lightweight title.
  • It was the last fight of his long championship run before Contender Series.
WinKO
Opponent: Felipe da Silva MaiapunchesR1 0:15
Fight Exclusive Night 36
16 Oct 2021

Maia barely had time to settle before Rębecki detonated a 15-second finish and kept the FEN title around his waist. It was one of the clearest examples of how abruptly his pressure and power could end a fight during that championship stretch.

Key moments

  • Rębecki knocked out Felipe da Silva Maia just 15 seconds into round one.
  • The finish served as another successful defense of the FEN lightweight belt.
  • It was one of the fastest stoppages of Rębecki's career.
WinKO
Opponent: Jose Barrios VargaspunchR1 0:48
Fight Exclusive Night 32
20 Feb 2021

Rębecki needed less than a minute to blast through Vargas and reinforce how far ahead of the FEN field he had become. The knockout was another title defense and another reminder that his fights in Poland were increasingly ending before they really began.

Key moments

  • Rębecki knocked out Jose Barrios Vargas at 0:48 of round one.
  • The bout was another defense of the FEN lightweight championship.
  • He also picked up a Knockout of the Night bonus for the performance.
WinTKO
Opponent: Fabiano SilvapunchesR1 4:37
Fight Exclusive Night 28
13 Jun 2020

Even after the long layoff between title defenses, Rębecki returned with the same forward pressure and eventually overwhelmed Silva late in the opening round. The stoppage kept his belt reign moving and continued the pattern of violent finishes that defined it.

Key moments

  • Rębecki stopped Fabiano Silva with punches at 4:37 of round one.
  • It counted as another successful defense of the FEN lightweight title.
  • The finish extended Rębecki's winning streak deeper into double digits.
WinTKO
Opponent: Magomed MagomedovelbowsR2 4:30
Fight Exclusive Night 27
18 Jan 2020

Rębecki's title defense against Magomedov turned into another pressure fight in which he steadily wore his opponent down before finishing with elbows in round two. It was a sharp reminder that he could mix grinding control with real damage when the openings appeared.

Key moments

  • Rębecki stopped Magomed Magomedov with elbows at 4:30 of round two.
  • The fight was another successful FEN lightweight title defense.
  • It kept his championship run intact heading into 2020.
WinTKO
Opponent: Kaik Britopunches and elbowsR3 4:29
Battlefield FC 2
27 Jul 2019

Rębecki temporarily stepped away from FEN and still produced the same kind of attritional finish, breaking Brito down across three rounds before closing the show late. The overseas win kept his unbeaten championship stretch alive between title defenses.

Key moments

  • Rębecki stopped Kaik Brito with punches and elbows at 4:29 of round three.
  • The bout took place as a one-off appearance away from FEN.
  • It preserved his momentum between lightweight title defenses.
WinTKO
Opponent: Daguir Imavovcorner stoppageR1 5:00
Fight Exclusive Night 23
12 Jan 2019

Rębecki's second FEN title defense was brutally efficient, as he battered Imavov through one round badly enough for the corner to stop it before the second. By that point his title reign was starting to look less competitive and more like a systematic clearing of the division.

Key moments

  • Imavov's corner stopped the fight after round one, giving Rębecki the TKO win.
  • It was Rębecki's second successful defense of the FEN lightweight title.
  • The finish kept his unbeaten streak rolling into 2019.
WinTKO
Opponent: Łukasz KoperapunchesR3 0:52
Fight Exclusive Night 22
20 Oct 2018

Kopera gave Rębecki rounds to solve, but once the champion found the timing again he ended the fight early in the third. The stoppage marked his first title defense and helped show that his body-shot-heavy offense and pressure translated well over longer championship fights too.

Key moments

  • Rębecki stopped Lukasz Kopera at 0:52 of round three.
  • The victory was his first defense of the FEN lightweight championship.
  • The performance also earned him a Fight of the Night bonus in FEN.
WinKO
Opponent: Marian Ziółkowskipunch to the bodyR4 3:49
Fight Exclusive Night 20
10 Mar 2018

Rębecki announced himself as FEN's new lightweight champion with a sustained, punishing performance that ended on a body-shot knockout in the fourth round. Winning the vacant belt in that fashion was the start of the reign that eventually carried him to the UFC.

Key moments

  • Rębecki knocked out Marian Ziolkowski with a body shot at 3:49 of round four.
  • The win earned him the vacant FEN lightweight championship.
  • He also collected a Knockout of the Night bonus for the title-winning finish.
WinSUB
Opponent: Dmitriy GolbaevarmbarR3 4:59
Fight Exclusive Night 18
12 Aug 2017

Golbaev pushed Rębecki deeper than many of his earlier opponents had, but Rębecki still found the finish with only a second left in the third round. The last-gasp armbar was an early sign that his fights could stay dangerous all the way to the horn.

Key moments

  • Rębecki submitted Dmitriy Golbaev with an armbar at 4:59 of round three.
  • The finish came with only one second left in the fight.
  • It extended his winning streak inside FEN before the title run began.
WinDEC
Opponent: Adam GolonkiewiczunanimousR3 5:00
Fight Exclusive Night 15
14 Jan 2017

After more than a year away, Rębecki came back with a controlled decision over Golonkiewicz rather than chasing a reckless finish. The win restarted his climb in FEN and set up the run that would eventually end with the title on his shoulder.

Key moments

  • Rębecki beat Adam Golonkiewicz by unanimous decision.
  • The bout marked his return after an extended layoff.
  • It pushed his professional record forward to 6-1.
WinSUB
Opponent: Jacek KreftarmbarR1 4:12
Fight Exclusive Night 8
31 Jul 2015

Rębecki's FEN debut ended with a first-round armbar and gave an early glimpse of how complete his finishing game already was. It was also the performance that started his long relationship with the promotion he would eventually dominate as champion.

Key moments

  • Rębecki submitted Jacek Kreft with an armbar at 4:12 of round one.
  • The bout was his first appearance under the FEN banner.
  • He earned a Submission of the Night bonus for the finish.
LossKO
Opponent: Paweł KiełekpunchesR2 1:30
Gryf Arena Fight Night 2
20 Sep 2014

Kiełek handed Rębecki the lone loss of his long pre-UFC build by stopping him in the second round. Rather than derail him, the defeat became the early-career scar that sat beneath the long run of regional dominance that followed.

Key moments

  • Rębecki lost to Pawel Kielek by punches at 1:30 of round two.
  • It was the only loss of Rębecki's regional career before the UFC.
  • He responded by winning his next thirteen fights.
WinSUB
Opponent: Oleg Obrevkoheel hookR1 1:45
MMA Koszalin 3: Poland vs. Ukraine
9 Aug 2014

Rębecki's third professional fight reinforced how fast his submission game could end things, as Obrevko lasted less than two minutes before the heel hook finish. Even at this stage, his attacks on the legs and transitions were already clear weapons.

Key moments

  • Rębecki submitted Oleg Obrevko with a heel hook at 1:45 of round one.
  • The win improved his record to 3-0 at the time.
  • It came only weeks before his first professional defeat.
WinSUB
Opponent: Semen Tyrlyaheel hookR1 1:55
Arena Berserkerów 6
7 Jun 2014

Tyrlya became the second straight opponent Rębecki submitted with a first-round heel hook, a sign that his preferred finishing patterns were already well developed. The quick win kept his professional start perfect through two outings.

Key moments

  • Rębecki tapped Semen Tyrlya with a heel hook at 1:55 of round one.
  • It was his second professional victory.
  • The finish continued his early all-submission start.
WinSUB
Opponent: Paweł Zegarheel hookR1 0:49
Gryf Arena Fight Night 1
5 Apr 2014

Rębecki's professional debut was over almost as soon as it started, with a heel hook finish in under a minute. It was the first glimpse of the compact, aggressive finisher who would later run through the FEN lightweight division.

Key moments

  • Rębecki won his professional debut by heel hook at 0:49 of round one.
  • The finish came against Pawel Zegar in April 2014.
  • It began a pro career that quickly became championship level on the regional scene.

The Read

Style, strengths, and where this fighter stands.

Rębecki fights like a compact pressure lightweight who expects exchanges to get messy and is comfortable winning them there. He throws hard, wrestles in bursts, and has enough submission skill to punish opponents who overreact once the fight hits the mat. The shorter frame means he often has to cross open space against bigger UFC lightweights, but it also makes him difficult to move once he decides to drive forward.

His career before the UFC was full of championship control in FEN, and the UFC version has carried the same violence even when the results split both ways. The wins over Loik Radzhabov, Roosevelt Roberts and Myktybek Orolbai showed why he is dangerous to anyone willing to brawl with him, while the losses to Carlos Diego Ferreira, Chris Duncan, Ludovit Klein and Grant Dawson showed the price he pays when pace, range or late grappling turns against him.