Bartosz Leśko (born 28 April 1996) is a Polish professional mixed martial artist. He is the current KSW Light Heavyweight champion. He has previously competed on Absolute Championship Akhmat (ACA) and Fight Exclusive Night (FEN MMA).
Professional career Early career Leśko made his professional debut on January 17, 2015, against Marek Michaluk. Leśko won the fight via a first-round submission.
His next fight came on October 24, 2015, against Mikołaj Dziąbor. Leśko won the fight via a first-round TKO.
His next fight came on December 19, 2015, against Robert Maciejowski. The bout ended in a Majority Draw.
Time of Masters Leśko returned to Time of Masters, the federation which he made his professional debut under, on March 12, 2016, against Tomasz Kubczak. Leśko won the fight via a second-round TKO.
His next fight came on November 19, 2016, against Maciej Szydłowski. Leśko won the fight via a first-round submission.
Fight Exclusive Night Leśko made his debut under Fight Exclusive Night (FEN MMA) on May 12, 2017, against Aleksander Rychlik. Leśko won the fight via a second-round submission. This performance earned him his first career Submission of the Night bonus.
His next fight came on October 14, 2017, against Paweł Brandys. Leśko won the fight via a Unanimous Decision.
His next fight came on March 10, 2018, against Marcin Naruszczka. Leśko lost the fight via a Unanimous Decision, suffering his first career defeat in the process.
His next fight came on May 25, 2018 against Kevin Wiwatowski. Leśko won the fight via a first-round submission.
His next fight came on October 20, 2018, against Tomasz Kondraciuk. Leśko won the fight via a first-round submission. This performance earned him his second career Submission of the Night bonus.
His next fight came on March 16, 2019, in a rematch against Marcin Naruszczka. The bout ended in a Split Draw.
His final fight with the federation came on June 15, 2019, in a rematch against Kevin Wiwatowski. Leśko won the fight via a first-round submission.
Absolute Championship Akhmat Leśko made his debut under Russian federation Absolute Championship Akhmat on November 26, 2020, against Rene Pessoa. Leśko won the fight via a Unanimous Decision.
His next fight came on September 11, 2021, against Ibragim Magomedov. Leśko won the fight via a first-round disqualification, after Magomedov landed an illegal knee.
His final fight with the federation came on December 17, 2021, against Khusein Kushagov. Leśko lost the fight via a second-round knockout.
Konfrontacja Sztuk Walki On May 11, 2022, it was announced that Leśko had signed a contract with Konfrontacja Sztuk Walki (KSW).
His first fight with the federation came two weeks later on May 28, against Damian Piwowarczyk. Leśko won the fight via a Unanimous Decision.
His next fight came on March 17, 2023, against Tom Breese. Leśko lost the fight via a first-round submission.
His next fight came on July 15, 2023, against Nemanja Nikolić. Leśko won the fight via a first-round submission. This performance earned him his third career Submission of the Night bonus.
His next fight came on November 11, 2023, against Piotr Kuberski. Leśko lost the fight via a third-round TKO.
His next fight came on May 11, 2024, against Michał Michalski. Leśko lost the fight via a first-round TKO.
His next fight came on September 14, 2024, against Dominik Humburger, stepping in on fight night for a medically uncleared Bogdan Gnidko. Leśko won the fight via a Unanimous Decision. This performance earned him his first Performance of the Night bonus.
His next fight came on March 8, 2025, against Maciej Różański. Leśko won the fight via a Unanimous Decision.
Leśko faced Rafał Haratyk for Haratyk's KSW Light Heavyweight Championship on October 18, 2025. Leśko lost the fight via a Unanimous Decision, thus failing to capture the championship.
His next fight came on March 14, 2026, against Bartosz Szewczyk. Leśko won the fight via a Unanimous Decision.
KSW Light Heavyweight Champion Leśko faced Rafał Haratyk in a rematch for Haratyk's KSW Light Heavyweight Championship on July 18, 2026. Leśko won the fight via a Unanimous Decision, winning his first career championship in the process. This performance earned him his first Fight of the Night bonus.
Championships and accomplishments Mixed martial arts Konfrontacja Sztuk Walki KSW Light Heavyweight Championship (One time; current) Fight of the Night (One time) Performance of the Night (One time) Submission of the Night (One time) Fight Exclusive Night Submission of the Night (Two times)
Mixed martial arts record
|Win |align=center| |Rafał Haratyk |Decision (unanimous) |KSW 120 | |align=center|5 |align=center|5:00 |Gdynia, Poland
|Win |align=center| |Bartosz Szewczyk |Decision (unanimous) |KSW 116 | |align=center|3 |align=center|5:00 |Gorzów Wielkopolski, Poland
|Loss |align=center| |Rafał Haratyk |Decision (unanimous) |KSW 111 | |align=center|5 |align=center|5:00 |Třinec, Czech Republic
|Win |align=center| |Maciej Różański |Decision (unanimous) |KSW 104 | |align=center|3 |align=center|5:00 |Gorzów Wielkopolski, Poland
|Win |align=center| |Dominik Humburger |Decision (unanimous) |KSW 98 | |align=center|3 |align=center|5:00 |Lubin, Poland
|Loss |align=center| |Michał Michalski |TKO (punches) |KSW 94 | |align=center|1 |align=center|1:46 |Gdańsk, Poland
|Loss |align=center| |Piotr Kuberski |KO (punches) |KSW 88 | |align=center|3 |align=center|1:11 |Radom, Poland
|Win |align=center| |Nemanja Nikolić |Submission (rear-naked choke) |KSW 84 | |align=center|1 |align=center|4:40 |Gdynia, Poland
|Loss |align=center| |Tom Breese |Submission (rear-naked choke) |KSW 80 | |align=center|1 |align=center|2:45 |Lubin, Poland
|Win |align=center| |Damian Piwowarczyk |Decision (unanimous) |KSW 70 | |align=center|3 |align=center|5:00 |Łódź, Poland
|Loss |align=center| |Khusein Kushagov |KO (punch) |ACA 134 | |align=center|2 |align=center|1:37 |Krasnodar, Russia
|Win |align=center| |Ibragim Magomedov |DQ (illegal knee) |ACA 128 | |align=center|1 |align=center|3:14 |Minsk, Belarus
|Win |align=center| |Rene Pessoa |Decision (unanimous) |ACA 114 | |align=center|3 |align=center|5:00 |Łódź, Poland
|Win |align=center|9–1–2 |Kevin Wiwatowski |Submission (rear-naked choke) |Fight Exclusive Night 25 | |align=center|1 |align=center|4:16 |Ostróda, Poland
|Draw |align=center|8–1–2 |Marcin Naruszczka |Draw (split) |Fight Exclusive Night 24 | |align=center|3 |align=center|5:00 |Warsaw, Poland
|Win |align=center|8–1–1 |Tomasz Kondraciuk |Submission (rear-naked choke) |Fight Exclusive Night 22 | |align=center|1 |align=center|4:15 |Poznań, Poland
|Win |align=center|7–1–1 |Kevin Wiwatowski |Submission (rear-naked choke) |Fight Exclusive Night 21 | |align=center|1 |align=center|2:53 |Wrocław, Poland
|Loss |align=center|6–1–1 |Marcin Naruszczka |Decision (unanimous) |Fight Exclusive Night 20 | |align=center|3 |align=center|5:00 |Warsaw, Poland
|Win |align=center|6–0–1 |Paweł Brandys |Decision (unanimous) |Fight Exclusive Night 19 | |align=center|3 |align=center|5:00 |Wrocław, Poland
|Win |align=center|5–0–1 |Aleksander Rychlik |Submission (rear-naked choke) |Fight Exclusive Night 18 | |align=center|2 |align=center|1:18 |Gdynia, Poland
|Win |align=center|4–0–1 |Maciej Szydłowski |Submission (rear-naked choke) |Time of Masters: Siemmce Fight Night | |align=center|1 |align=center|2:01 |Siemianowice Śląskie, Poland
|Win |align=center|3–0–1 |Tomasz Kubczak |TKO (punches) |Time of Masters 2 | |align=center|2 |align=center|1:21 |Sopot, Poland
|Draw |align=center|2–0–1 |Robert Maciejowski |Draw (majority) |MMA Fight Night 4 | |align=center|3 |align=center|5:00 |Kołczewo, Poland
|Win |align=center|2–0 |Mikołaj Dziąbor |TKO (punches) |Incredible Fighting Night 1 | |align=center|1 |align=center|3:25 |Częstochowa, Poland
|Win |align=center|1–0 |Marek Michaluk |Submission (rear-naked choke) |Time of Masters 1 | |align=center|1 |align=center|2:45 |Sopot, Poland |
See also List of current mixed martial arts champions List of male mixed martial artists List of current Konfrontacja Sztuk Walki fighters
References
External links