Mateusz Kubiszyn
Mateusz Kubiszyn is a Polish bare-knuckle boxer, kickboxer, and former mixed martial artist, and professional boxer. He is the current Gromda Heavyweight Champion. He is currently ranked #1 pound for pound globally in bare-knuckle boxing according to BoxRec.
Kickboxing career
Early career
Kubiszyn made his professional debut on December 16, 2016, against Maksymilian Bratkowicz. Kubiszyn won the fight via a Unanimous Decision.His next fight came on September 29, 2017, against Damian Pasiek. Kubiszyn won the fight via a Unanimous Decision.
His next fight came on December 8, 2017, against Yurii Zubchuk. Kubiszyn lost the fight via a Unanimous Decision.
He faced Maksymilian Bratkowicz in a rematch for the DSF Light Heavyweight Championship on February 3, 2018. Kubiszyn lost the fight via a Unanimous Decision.
PZKB Light Heavyweight Champion
He faced Kacper Frątczak for the PZKB Light Heavyweight Championship on June 16, 2018. Kubiszyn won the fight via a Split Decision, winning his first career championship in the process.Fight Exclusive Night
Kubiszyn made his debut under Fight Exclusive Night on October 20, 2018, against Łukasz Radosz. Kubiszyn lost the fight via a Unanimous Decision.Wirtuoz Challenge
Kubiszyn made his debut under local federation Wirtuoz Challenge on April 6, 2019, against Tomasz Konieczny. Kubiszyn won the fight via a Unanimous Decision.Halny Fighting Organization
Kubiszyn made his debut under Halny Fighting Organization on September 20, 2019, against Bartłomiej Domalik. The fight ended in a Unanimous Draw.High League
After a four-year hiatus, Kubiszyn returned on March 18, 2023, against Dawid Załęcki. Kubiszyn won the fight via a Unanimous Decision.Fame MMA
Kubiszyn made his debut under Fame MMA on October 4, 2024, against Michał Pasternak. Kubiszyn lost the fight via a Split Decision.Professional boxing record
Kubiszyn made his professional boxing debut on September 15, 2018, against Paweł Kochański. Kubiszyn won the fight via a Points Decision.His next fight came on March 23, 2019, against Mariusz Nowak. Kubiszyn won the fight via a second-round corner retirement.
His next fight came on May 11, 2019, against Roman Fress. Kubiszyn lost the fight via a Unanimous Decision.
His next fight came on August 3, 2019, against Damien Sullivan under the federation Top Rank. Kubiszyn won the fight via a first-round TKO.
His next fight came on November 2, 2019, against Ralfs Vilcans. Kubiszyn lost the fight via a Split Decision.
His next fight came on January 28, 2020, against Salar Gholami. Kubiszyn lost the fight via a Unanimous Decision.
His final fight came on July 25, 2020, against Adam Balski. Kubiszyn lost the fight via a Unanimous Decision.
Mixed martial arts career
Kubiszyn made his MMA debut on June 20, 2022, against Denis Załęcki. Kubiszyn won the fight via a Unanimous Decision.His next fight came on December 10, 2022, against Damian Janikowski. Kubiszyn lost the fight via a Unanimous Decision.
Bare-knuckle boxing career
Kubiszyn made his bare-knuckle boxing debut on August 28, 2020, where he competed in the second Gromda tournament. In the first round, he faced Artur Tomala. Kubiszyn won the fight via a second-round knockout. In the semifinals, he faced Rafał Łazarek. Kubiszyn won the fight via a fifth-round retirement. In the final, he faced Dawid Żółtaszek. Kubiszyn won the fight via a second-round TKO due to a doctor stoppage, winning the tournament in the process.He faced Krystian Kuźma, who won the first tournament during the inaugural event in a Grand Final, in which he competed as the champion of the aforementioned tournament on December 11, 2020. Kubiszyn won the fight via a third-round knockout, once again winning the same tournament.
His next fight came on May 7, 2021, against Paweł Strzelczyk. The bout was originally ruled a no contest following an illegal blow. This was later changed to a TKO victory for Kubiszyn.
His next fight came on September 2, 2022, against Vasyl Halych. Kubiszyn won the fight via a fifth-round corner retirement. This performance earned him his first Fight of the Night bonus.
Gromda Heavyweight Champion
Kubiszyn faced Bartłomiej Domalik for the Gromda Heavyweight Championship on May 26, 2023. The two previously met four years prior in a kickboxing bout. Kubiszyn won the fight via fifth-round corner retirment, winning his first bare-knuckle boxing championship in the process.His first title defense came on December 1, 2023, against Łukasz Parobiec. Kubiszyn won the fight via a second-round corner retirement, successfully defending his title.
His second title defense came on May 31, 2024, in a rematch against Bartłomiej Domalik. Kubiszyn won the fight via a fourth-round knockout.
His third title defense came on March 7, 2025, against Jakub Słomka. Kubiszyn won the fight via a fifth-round corner retirement.
Championships and accomplishments
Kickboxing
- PZKB Light Heavyweight Championship
Bare-knuckle boxing
- Gromda Heavyweight Championship
- *Three successful title defenses
- Fight of the Night
Professional boxing record
| No. | Result | Record | Opponent | Type | Round, time | Date | Location | Notes |
| 7 | Loss | 3–4 | Adam Balski | UD | 6 | 25 Jul 2020 | Amfiteatr Miejski, Augustów, Poland | |
| 6 | Loss | 3–3 | Salar Gholami | UD | 4 | 28 Jan 2020 | Danforth Music Hall, Toronto, Canada | |
| 5 | Loss | 3–2 | Ralfs Vilcans | 6 | 2 Nov 2019 | Arena Riga, Riga, Latvia | ||
| 4 | Win | 3–1 | Damien Sullivan | 1, 2:34 | 3 Aug 2019 | Falls Park, Belfast, Northern Ireland | ||
| 3 | Loss | 2–1 | Roman Fress | 6 | 11 May 2019 | Stadthalle, Magdeburg, Germany | ||
| 2 | Win | 2–0 | Mariusz Nowak | 2, 3:00 | 23 Mar 2019 | Miejska Hala Sportowa, Świebodzin, Poland | ||
| 1 | Win | 1–0 | Paweł Kochański | 4 | 15 Sep 2018 | Poznań, Poland |
Kickboxing record
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