Mateusz Kubiszyn (born 18 July 1991) 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.
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.
He faced Kacper FrÃÂ tczak 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.
Kubiszyn made his debut under Fight Exclusive Night on October 20, 2018, against à Âukasz Radosz. Kubiszyn lost the fight via a Unanimous Decision.
Kubiszyn made his debut under local federation Wirtuoz Challenge on April 6, 2019, against Tomasz Konieczny. Kubiszyn won the fight via a Unanimous Decision.
Kubiszyn made his debut under Halny Fighting Organization on September 20, 2019, against Bartà Âomiej Domalik. The fight ended in a Unanimous Draw.
After a four-year hiatus, Kubiszyn returned on March 18, 2023, against Dawid Zaà ÂÃÂcki. Kubiszyn won the fight via a Unanimous Decision.
Kubiszyn made his debut under Fame MMA on October 4, 2024, against Michaà  Pasternak. Kubiszyn lost the fight via a Split Decision.
Kubiszyn made his professional boxing debut on September 15, 2018, against Paweà  Kochaà Âski. 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.
Kubiszyn made his MMA debut on June 20, 2022, against Denis Zaà ÂÃÂcki. 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.
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 Rafaà  à Âazarek. Kubiszyn won the fight via a fifth-round retirement. In the final, he faced Dawid à »Ã³à Âtaszek. Kubiszyn won the fight via a second-round TKO due to a doctor stoppage, winning the tournament in the process.
He faced Krystian Kuà ºma, 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 Paweà  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.
Kubiszyn faced Bartà Âomiej 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 retirement, winning his first bare-knuckle boxing championship in the process.
His first title defense came on December 1, 2023, against à Âukasz 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 Bartà Âomiej Domalik. Kubiszyn won the fight via a fourth-round knockout.
His third title defense came on March 7, 2025, against Jakub SÃ Âomka. Kubiszyn won the fight via a fifth-round corner retirement.
|- |Loss |align=center|1âÂÂ1 |Damian Janikowski |Decision (unanimous) |High League 5 | |align=center|3 |align=center|5:00 |à Âódà º, Poland | |- |Win |align=center|1âÂÂ0 |Denis Zaà ÂÃÂcki |Decision (unanimous) |High League 3 | |align=center|3 |align=center|5:00 |Warsaw, Poland |
|- |Win |align=center|10âÂÂ0 |Jakub Sà Âomka |TKO (corner retirement) |Gromda 20: Stara Szkoà Âa | |align=center|5 |align=center|11:37 |Pionki, Poland | |- |Win |align=center|9âÂÂ0 |Bartà Âomiej Domalik |KO (punches) |Gromda 17: Vabank | |align=center|4 |align=center|1:56 |Pionki, Poland | |- |Win |align=center|8âÂÂ0 |à Âukasz Parobiec |TKO (corner retirement) |Gromda 15: Podziemny Kràg | |align=center|2 |align=center|0:22 |Pionki, Poland | |- |Win |align=center|7âÂÂ0 |Bartà Âomiej Domalik |TKO (corner retirement) |Gromda 13: Don Diego vs. Balboa | |align=center|5 |align=center|1:10 |Pionki, Poland | |- |Win |align=center|6âÂÂ0 |Vasyl Halych |TKO (corner retirement) |Gromda 10: Don Diego vs. Vasyl | |align=center|5 |align=center|8:48 |Pionki, Poland | |- |Win |align=center|5âÂÂ0 |Paweà  Strzelczyk |TKO (punch) |Gromda 5 | |align=center|2 |align=center|N/A |Pionki, Poland | |- |Win |align=center|4âÂÂ0 |Krystian Kuà ºma |KO (punch) |Gromda 3: Tyson vs. Don Diego | |align=center|3 |align=center|1:44 |Pionki, Poland | |- |Win |align=center|3âÂÂ0 |Dawid à »Ã³à Âtaszek |TKO (doctor stoppage) |rowspan=3|Gromda 2 |rowspan=3| |align=center|2 |align=center|N/A |rowspan=3|Warsaw, Poland | |- |Win |align=center|2âÂÂ0 |Rafaà  à Âazarek |TKO (retirement) |align=center|5 |align=center|4:36 | |- |Win |align=center|1âÂÂ0 |Artur Tomala |KO (punch) |align=center|2 |align=center|N/A |
|- bgcolor="#fbb" | 2026-01-24 || Loss ||align=left| Izuagbe Ugonoh || Fame 29: S-Class Tournament || Tarnów, Poland || Decision (unanimous)||3 ||3:00 |- ! style=background:white colspan=9 | |- bgcolor="#fbb" | 2025-07-12 || Loss ||align=left| Denis Labryga || Fame 26: Gold || Warsaw, Poland || Decision (technical)||1 ||10:02 |- bgcolor="#cfc" | rowspan=2|2025-07-12 || Win ||align=left| Tomasz Sarara || rowspan=2|Fame 26: Gold || rowspan=2|Warsaw, Poland || Decision (unanimous)||3 ||3:00 |- bgcolor="#cfc" | Win ||align=left| Kamil Minda || Decision (unanimous)||3 ||3:00 |- ! style=background:white colspan=9 | |- |- bgcolor="#fbb" | 2024-10-04 || Loss ||align=left| Michaà  Pasternak || Fame: The Freak || Szczecin, Poland || Decision (split)||3 ||3:00 |- |- bgcolor="#cfc" | 2023-03-18 || Win ||align=left| Dawid Zaà ÂÃÂcki || High League 6 || Katowice, Poland || Decision (unanimous)||3 ||3:00 |- |- style="background:#c5d2ea;" | 2019-09-20 || Draw ||align=left| Bartà Âomiej Domalik || HFO Spartan Night || Jasà Âo, Poland || Draw (unanimous)||4 ||3:00 |- |- bgcolor="#cfc" | 2019-04-06 || Win ||align=left| Tomasz Konieczny || Wirtuoz Challenge 2 || Wolbórz, Poland || Decision (unanimous)||3 ||3:00 |- |- bgcolor="#fbb" | 2018-10-20 || Loss ||align=left| à Âukasz Radosz || Fight Exclusive Night 22 || Poznaà Â, Poland || Decision (unanimous)||3 ||3:00 |- |- bgcolor="#cfc" | 2018-06-16 || Win ||align=left| Kacper Fràtczak || Kickboxing Masters Fight Series || Mysiadà Âo, Poland || Decision (split)||3 ||3:00 |- ! style=background:white colspan=9 | |- bgcolor="#fbb" |- |- bgcolor="#fbb" | 2018-02-03 || Loss ||align=left| Maksymilian Bratkowicz || DSF Kickboxing Challenge 13 || Wrocà Âaw, Poland || Decision (unanimous)||5 ||3:00 |- ! style=background:white colspan=9 | |- |- bgcolor="#fbb" | 2017-12-08 || Loss ||align=left| Yurii Zubchuk || DSF â MiÃÂdzynarodowy Mecz K-1 Polska vs. Ukraina || Rivne, Ukraine || Ext.R Decision||4 ||3:00 |- |- bgcolor="#cfc" | 2017-09-29 || Win ||align=left| Damian Pasiek || DSF Eliminator || Zàbki, Poland || Decision (unanimous)||3 ||3:00 |- |- bgcolor="#cfc" | 2016-12-16 || Win ||align=left| Maksymilian Bratkowicz || DSF Kickboxing Challenge || Warsaw, Poland || Decision (unanimous)||3 ||3:00