Michał Oleksiejczuk (born February 22, 1995) is a Polish

mixed martial artist Mixed martial arts (MMA) is a full-contact fighting sport based on striking and grappling; incorporating techniques from various combat sports from around the world. In the early 20th century, various inter-stylistic contests took place t ...

. A professional since 2014, he was the former Thunderstrike Fight League Light heavyweight champion in Poland. He currently competes in the

middleweight Middleweight is a weight class in combat sports. Boxing Professional In professional boxing, the middleweight division is contested above and up to . Early boxing history is less than exact, but the middleweight designation seems to have beg ...

division of the

Ultimate Fighting Championship The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promoter (entertainment), promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor ( ...

(UFC).

Background

Michal played handball before finding martial arts. Oleksiejczuk has a younger brother named Cezary, who is also a professional mixed martial artist.

Mixed martial arts career

Early career

Oleksiejczuk started his MMA career in 2014. Fighting primarily in Poland, he amassed a record of 12–2 before being signed by UFC in 2017.

Ultimate Fighting Championship

Oleksiejczuk was expected to have made his UFC debut to face Ion Cuțelaba on November 4, 2017, at UFC 217, replacing injured Gadzhimurad Antigulov. In turn after the weigh-ins, Cuțelaba was pulled from the event by USADA due to a potential Anti-Doping Policy violation stemming from its investigation into voluntary disclosures by Cuțelaba during an out-of-competition sample collections on October 18 and October 19. Cuțelaba was provisionally suspended and the bout was scrapped. Oleksiejczuk's UFC debut was finally set on December 30, 2017, facing Khalil Rountree Jr. and replacing injured Gökhan Saki, at

UFC 219 ''UFC 219: Cyborg vs. Holm'' was a mixed martial arts event produced by the Ultimate Fighting Championship held on December 30, 2017, at the T-Mobile Arena in Paradise, Nevada, part of the Las Vegas–Paradise, NV MSA, Las Vegas metropolitan area. ...

. However, after the fight, it was revealed that Oleksiejczuk had tested positive for

clomiphene Clomifene, also known as clomiphene, is a medication used to treat infertility in women who anovulation, do not ovulate, including those with polycystic ovary syndrome. It is taken by mouth. Common side effects include pelvic pain and hot f ...

, an anti-estrogenic substance. As a result, the Nevada Athletic Commission (NAC) officially overturned the result of the fight to a no contest and Oleksiejczuk received one year suspension by USADA. Oleksiejczuk returned to octagon one year later to face Gian Villante on February 23, 2019, at UFC Fight Night: Błachowicz vs. Santos. He won the fight via TKO due to a body punch early in the first round. This win earned him the ''Performance of the Night'' award. Oleksiejczuk faced Gadzhimurad Antigulov on April 20, 2019, replacing Roman Dolidze, at UFC Fight Night: Overeem vs. Oleinik. Oleksiejczuk won the fight via knockout in the first round. Oleksiejczuk faced Ovince Saint Preux on September 28, 2019, at UFC on ESPN+ 18. He lost the fight via submission due to a Von Flue choke in the second round. Oleksiejczuk faced Jimmy Crute on February 23, 2020, at UFC Fight Night 168. He lost the fight via a kimura submission in the first round. Oleksiejczuk faced Modestas Bukauskas on March 27, 2021, at UFC 260. He won a close bout via split decision. Oleksiejczuk faced Shamil Gamzatov on October 30, 2021, at UFC 267. He won the bout via TKO in the first round. Oleksiejczuk faced

Dustin Jacoby Dustin Anthony Jacoby (born April 4, 1988) is an American professional mixed martial arts, mixed martial artist and former kickboxer. He currently competes in the Light Heavyweight (MMA), Light Heavyweight division of the Ultimate Fighting Champi ...

on March 5, 2022, at UFC 272. He lost the fight via unanimous decision.

Drop down to middleweight

Oleksiejczuk faced Sam Alvey on August 6, 2022, at UFC on ESPN 40. He won the fight via technical knockout in round one. Oleksiejczuk was scheduled to face Albert Duraev, replacing injured Bruno Silva, on December 17, 2022, at UFC Fight Night 216. In turn, Duraev was forced to withdraw for undisclosed reasons and was replaced by Cody Brundage. Oleksiejczuk won the fight via knockout in round one. This win earned him the Performance of the Night award. Oleksiejczuk faced Caio Borralho on April 29, 2023, at UFC on ESPN: Song vs. Simón. He lost the fight via rear-naked choke in round two. Oleksiejczuk faced

Chidi Njokuani Chidi Godson Njokuani (born December 31, 1988) is an American professional mixed martial artist, former Muay Thai fighter and kickboxer, who currently competes in the Middleweight division of the Ultimate Fighting Championship (UFC). A professio ...

at UFC Fight Night 225 on August 26, 2023. He won by first-round ground and pound technical knockout, which earned him a '' Performance of the Night '' award. Oleksiejczuk faced Michel Pereira on March 9, 2024, at UFC 299. He lost the bout in the first round by rear-naked choke submission. Oleksiejczuk faced Kevin Holland on June 1, 2024, at UFC 302. After knocking Holland down, Oleksiejczuk lost by an armbar submission in the first round. Oleksiejczuk faced Sharabutdin Magomedov on August 3, 2024 at UFC on ABC 7. He lost the fight by unanimous decision. This fight earned him a '' Fight of the Night'' award. Oleksiejczuk faced Sedriques Dumas on April 12, 2025 at UFC 314. He won the fight by technical knockout in the first round. Oleksiejczuk is scheduled to face

Gerald Meerschaert Gerald Edward Meerschaert III (born December 18, 1987) is an American professional mixed martial artist who currently competes in the Middleweight division of the Ultimate Fighting Championship (UFC), where he holds the record for most finishes i ...

on August 16, 2025, at UFC 319.

Championships and accomplishments

Mixed martial arts

** Fight of the Night (One time) ** Performance of the Night (Three times) **UFC Honors Awards *** 2023: Fan's Choice Comeback of the Year Nominee *Thunderstrike Fight League **Thunderstrike Fight League Light heavyweight Champion (One time) ***Two Successful Title Defenses

Mixed martial arts record

, Win , align=center, 20–9 (1) , Sedriques Dumas , TKO (punches and elbows) , UFC 314 , , align=center, 1 , align=center, 2:49 ,

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, New Zealand , , - , Loss , align=center, 14–3 (1) , Ovince Saint Preux , Submission (Von Flue choke) , UFC Fight Night: Hermansson vs. Cannonier , , align=center, 2 , align=center, 2:14 ,

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, Denmark , , - , Win , align=center, 14–2 (1) , Gadzhimurad Antigulov , KO (punch) , UFC Fight Night: Overeem vs. Oleinik , , align=center, 1 , align=center, 0:44 ,

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Kraśnik Kraśnik is a town in southeastern Poland with 35,602 inhabitants (2012), situated in the Lublin Voivodeship, historic Lesser Poland. It is the seat of Kraśnik County. The town of Kraśnik as it is known today was created in 1975, after the mer ...

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Wrocław Wrocław is a city in southwestern Poland, and the capital of the Lower Silesian Voivodeship. It is the largest city and historical capital of the region of Silesia. It lies on the banks of the Oder River in the Silesian Lowlands of Central Eu ...

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Lidzbark Warmiński Lidzbark Warmiński (; , ), often shortened to Lidzbark, is a historical town located within the Warmian-Masurian Voivodeship, in northern Poland. It is the capital of Lidzbark County. Lidzbark Warmiński was once the capital of Warmia and fo ...

, Poland , , - , Win , align=center, 6–2 , Andrejs Zozulja , KO (punches) , align=center, 1 , align=center, N/A , , - , Win , align=center, 5–2 , Tomasz Janiszewski , TKO (strikes) , Thunderstrike Fight League 7 , , align=center, 2 , align=center, 4:38 ,

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Łęczna Łęczna is a town in eastern Poland with 19,780 inhabitants (2014), situated in Lublin Voivodeship. It is the seat of Łęczna County and the smaller administrative district of Gmina Łęczna. The town is located in northeastern corner of histor ...

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Pionki Pionki is a town in Radom County, Masovian Voivodeship, central Poland with 18,846 inhabitants (2016). Surrounded by the ''Kozienice'' Wilderness, Pionki is located in northern part of historic province of Lesser Poland, from Radom, and from Wa ...

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Puławy Puławy (, also written Pulawy) is a city in eastern Poland, in Lesser Poland's Lublin Voivodeship, at the confluence of the Vistula and Kurówka River, Kurówka Rivers. Puławy is the capital of Puławy County. The city's 2019 population was Cen ...

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References

External links

* * {{DEFAULTSORT:Oleksiejczuk, Michał 1995 births Living people People from Włodawa County Light heavyweight mixed martial artists Mixed martial artists utilizing wrestling Mixed martial artists utilizing Brazilian jiu-jitsu Polish male mixed martial artists Ultimate Fighting Championship male fighters Doping cases in mixed martial arts Polish practitioners of Brazilian jiu-jitsu Polish sportspeople in doping cases People from Łęczna County Martial artists from Lublin Voivodeship 21st-century Polish sportsmen