Fighter

Mariusz Joniak

PolandLast 5

Amateur MMA 2-0

NEXT FIGHT

No upcoming fight scheduled.

Mariusz Joniak holds a professional MMA record of 13-6-0. Their full professional MMA career spans 19 bouts on record. Mariusz Joniak has won 13 fights: 2 by KO/TKO, 8 by submission, 3 by decision. Of 6 career losses, 1 came by KO/TKO and 3 by submission. Most recent fight: February 21, 2026. Tracked organizations: KSW.

Profile

Height: 5'6"168 cm
Weight: 136 lbs62 kg
Reach: 67"170 cm
DOB: 1997-08-16
Age: 29
Nationality: Poland
Birthplace: Bielawa, Poland

Career history

WIN
vs Karol Durszlewicz
KSWKSW 115 - Przybysz vs. Yakymenko· Feb 21, 2026· Bantamweight· 12-6 vs 4-0
UD
R3 · 5:00
LOSS
vs Islam Djabrailov
KSWKSW 98 - Paczuski vs. Zerhouni· Sep 14, 2024· Bantamweight· 12-5 vs 10-5
SUB
R2 · 1:22
WIN
vs Tobiasz Le
KSWKSW 91 - Mircea vs. Brichta· Feb 17, 2024· Bantamweight· 11-5 vs 4-1
TKO
R1 · 1:05
LOSS
vs Miljan Zdravkovic
KSWKSW 86 - Wiklacz vs. Przybysz 4· Sep 16, 2023· Bantamweight· 11-4 vs 6-0
KO
R1 · 4:16
WIN
vs Sebastian Romanowski
KSWKSW 83 - Colosseum 2· Jun 3, 2023· 163 lb Catchweight· 10-4 vs 14-10-1
MD
R3 · 5:00
WIN
vs Daniel Hodor
Bebson Arena 6· Aug 27, 2022· Featherweight· 9-4 vs 7-2
SUB
R2 · 2:20
WIN
vs Lukáš Chotěnovský
FEN 37: ENERGA Fight Night Wrocław· Nov 27, 2021· Bantamweight· 8-4 vs 6-0
TKO
R1 · 1:13
WIN
vs Krzysztof Gajek
FEN 35: LOTOS Fight Night Ostróda· Jun 26, 2021· Bantamweight· 7-4 vs 0-0
SUB
R1 · 2:24
WIN
vs Rafał Statkiewicz
FEN 30: LOTOS Fight Night 3· Oct 3, 2020· Bantamweight· 6-4 vs 2-2
SUB
R1 · 2:54
WIN
vs Oleksii Polishchuk
Fight Exclusive Night 27· Jan 18, 2020· Catchweight· 5-4 vs 7-2
UD
WIN
vs Piotr Olszynka
Bebson Arena 5· Aug 24, 2019· Catchweight· 4-4 vs 6-5-1
SUB
R3 · 2:45
LOSS
vs Mansur Azhiev
Armia Fight Night 5· Apr 5, 2019· Catchweight· 4-3 vs 2-0
UD
LOSS
vs Jakub Piesiewicz
Thunderstrike Fight League 15· Oct 20, 2018· Bantamweight· 4-2 vs 4-2-1
SUB
WIN
vs Kamil Korzeniowski
Bebson Arena 4· Aug 25, 2018· Bantamweight· 3-2 vs 0-0
SUB
R1 · 3:56
LOSS
vs Sylwester Miller
Giżycka Noc Gladiatorów 3· Feb 24, 2018· Featherweight· 3-1 vs 4-2
UD
LOSS
vs Dawid Kareta
Victory FC League 7· Dec 16, 2017· Featherweight· 3-0 vs 1-0
SUB
R1 · 3:36
WIN
vs Aleksander Keller
Bebson Arena 3· Nov 18, 2017· Bantamweight· 2-0 vs 0-0
SUB
R1 · 3:53
WIN
vs Mariusz Domin
Octagon Face 2 Face· Oct 21, 2017· Featherweight· 1-0 vs 4-7
SUB
WIN
vs Adrian Wędzik
Bebson Arena 2· Oct 29, 2016· Featherweight· 0-0 vs 1-0
SUB

Career history data via Tapology.

Official KSW Ranking

Mariusz Joniak's standing in the official KSW rankings.

Current: #9 Bantamweight
Peak: #9 Bantamweight
First ranked: Dec 1, 2023
Times ranked: 5

Bantamweight

View full KSW rankings →

UFCalendar Power Index rating

Current: 1631▲11
Peak: 1675Jun 3, 2023
Rated fights: 19

See the full Power Index →

Frequently asked questions

When does Mariusz Joniak fight next?

Mariusz Joniak has no confirmed upcoming fight.

What is Mariusz Joniak's record?

Mariusz Joniak's professional MMA record is 13-6-0.

Who is Mariusz Joniak fighting next?

Mariusz Joniak's next opponent has not been announced.

Who did Mariusz Joniak fight last?

Mariusz Joniak most recently fought Karol Durszlewicz at KSW 115 - Przybysz vs. Yakymenko on Saturday, February 21, 2026, WIN (Unanimous Decision).

What weight class does Mariusz Joniak fight in?

Mariusz Joniak fights at Bantamweight.

How many knockouts does Mariusz Joniak have?

Mariusz Joniak has 2 wins by KO/TKO and 8 wins by submission.

How tall is Mariusz Joniak?

Mariusz Joniak is 5'6" (168 cm) tall.

How much does Mariusz Joniak weigh?

Mariusz Joniak weighs 136 lbs (62 kg).

What is Mariusz Joniak's reach?

Mariusz Joniak has a reach of 67" (170 cm).

How old is Mariusz Joniak?

Mariusz Joniak is 29 years old (born Aug 16, 1997).

Where is Mariusz Joniak from?

Mariusz Joniak is from Poland.

CAREER SUMMARY