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Mariusz Joniak

13-6-0KSW #9BantamweightPolandPolandLast 5
Amateur MMA 2-0

Last fight: Win vs Karol Durszlewicz · Unanimous Decision · Feb 21, 2026

13-6-0 · 10 finishes · Full stats →
LAST FIGHT
WINvs Karol DurszlewiczUD · R3 5:00
KSWKSW 115: Przybysz vs Yakymenko·February 21, 2026

No next fight booked yet. Follow Mariusz Joniak to hear the moment one is.

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CAREER SUMMARY

Mariusz Joniak holds a professional MMA record of 13-6-0. 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
Aug 16, 1997
Age
29
Nationality
Poland
Birthplace
Bielawa, Poland

Career stats

Pro MMARecord: 13-6-0 · Source: UFCalendar
Striking
Strikes landed2.77per min
Strikes absorbed1.53per min
Grappling
Takedowns landed0.56per 15 min
13% success
Takedowns stuffed20%
Submission attempts3.4per 15 min
See every fight's numbers

Where they rank

All-time boards where Mariusz Joniak sits in the top 25.

Related fighters

Recent & upcoming opponents

Career history

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

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
6

Bantamweight

#1#5#10#15202420252026Dec 1, 2023 · #10Apr 21, 2024 · #9Jun 14, 2024 · #9Aug 1, 2026 · #9Sep 27, 2026 · #9#9

View full KSW rankings →

UFCalendar Power Index rating

Current
1632▲12
Peak
1675Feb 17, 2024
Rated fights
19
1500160020172019202120232025Oct 29, 2016 · 1545Oct 21, 2017 · 1577Nov 18, 2017 · 1609Dec 16, 2017 · 1560Feb 24, 2018 · 1534Aug 25, 2018 · 1571Oct 20, 2018 · 1540Apr 5, 2019 · 1525Aug 24, 2019 · 1550Jan 18, 2020 · 1570Oct 3, 2020 · 1592Jun 26, 2021 · 1614Nov 27, 2021 · 1641Aug 27, 2022 · 1661Jun 3, 2023 · 1675Sep 16, 2023 · 1644Feb 17, 2024 · 1675Sep 14, 2024 · 1639Feb 21, 2026 · 16321632

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.

Get Mariusz Joniak's fight history and stats as JSON with the MMA Fight Data API →