Mariusz Książkiewicz MMA Profile Record, Stats, Biography, KSW Career & Fight History
Photo Credit: ironpolmma/instagram
MARIUSZ KSIAZKIEWICZ
“The Iron Pol”
CANADA • LIGHT HEAVYWEIGHT
W-L-D
11-3-0
(T)KO
5-1
SUB
5-1
BIOGRAPHY
COUNTRY
Canada
WT CLASS
Light Heavyweight
HT / WT
6′ 3″, 206 lbs
BIRTHDATE
10/04/1989 (37)
STANCE
Southpaw
REACH
75.0″ (191cm)
TEAM / RESIDENCE
Winnipeg Academy of MMA • Winnipeg, Manitoba, Canada
NICKNAME
“The Iron Pol”
CAREER HONOURS & HISTORICAL RECORDS
Mariusz Ksiazkiewicz Record
WINS11
KO/TKO
5
SUB
5
DECISION
1
LOSSES3
KO/TKO
1
SUB
1
DECISION
1
DRAWS0
DR
0
NO CONTEST0
NC
0
Percentage Statistics
Calculated from 14 professional bouts (11-3-0).
RESULT
FIGHTER
EVENT
METHOD
DURATION/DATE
LOSS
Sergiusz Zajac
Poland
Poland
KSW 110 – Grzebyk vs. Tulshaev
Sep / 20 / 2025
KO (Punches)
Rnd 1 (1:07)
Sep / 20 / 2025
ROUND1
TIME1:07
METHODKO
Bout Specifications & Fight Financials
View Dossier
🥊 KSW Light Heavyweight Debut • Ksiazkiewicz vs. Zając
KSW Debut
Fighter MatchupMariusz Ksiazkiewicz vs Sergiusz Zając
Fight Location Rzeszów, Poland (Hala Podpromie)
Rzeszów, Poland (Hala Podpromie)Duration3 x 5 min
Weights Matchup206 lbs vs 206 lbs
Sergiusz Zajac Record at Bout (Opponent)8-1-0
Mariusz Ksiazkiewicz Record at Bout11-2-0
Officials
Ref: Aleh Miliakou
🥊 Action & Knockdowns:
Making his promotional KSW debut in Poland, Ksiazkiewicz landed solid early strikes before suffering a severe knee injury while planting his support leg during a kick attempt, dropping to the canvas where Zając landed follow-up hammerfists to halt the fight at 1:07 of round one.
WIN
Rafael Carvalho
Brazil
Brazil
Ignite Fights – Iowa Fight Series 2
Apr / 13 / 2024
KO (Punches)
Rnd 4 (0:47)
Apr / 13 / 2024
ROUND4
TIME0:47
METHODKO
Bout Specifications & Fight Financials
View Dossier
Ignite Fights Light Heavyweight Championship • Ksiazkiewicz vs. Carvalho
Captured Ignite Fights Title
Fighter MatchupMariusz Ksiazkiewicz vs Rafael Carvalho
Fight Location Marshalltown, Iowa, United States (Impala Ballroom)
Marshalltown, Iowa, United States (Impala Ballroom)Duration5 x 5 min
Weights Matchup205 lbs vs 205 lbs
Rafael Carvalho Record at Bout (Opponent)17-9-0
Mariusz Ksiazkiewicz Record at Bout10-2-0
🥊 Action & Knockdowns:
Headlining for the vacant Ignite Fights 205 lb world title, Ksiazkiewicz systematically dismantled former Bellator middleweight champion Rafael Carvalho, landing clean southpaw counters before catching Carvalho with a devastating right hand that knocked him out cold at 0:47 of round four.
LOSS
Eli Aronov
Israel
Israel
Unified MMA 45 – Unified MMA
May / 27 / 2022
Submission (Arm-Triangle Choke)
Rnd 2 (4:32)
May / 27 / 2022
ROUND2
TIME4:32
METHODSubmission
Bout Specifications & Fight Financials
View Dossier
Unified MMA Middleweight Championship • Ksiazkiewicz vs. Aronov
Defending Unified MMA Title
Fighter MatchupMariusz Ksiazkiewicz vs Eli Aronov
Fight Location Enoch, Alberta, Canada (River Cree Resort and Casino)
Enoch, Alberta, Canada (River Cree Resort and Casino)Duration5 x 5 min
Weights Matchup185 lbs vs 185 lbs
Eli Aronov Record at Bout (Opponent)5-0-0
Mariusz Ksiazkiewicz Record at Bout10-1-0
Officials
Ref: Luke Boutin
🥊 Action & Knockdowns:
Defending his belt in the main event of Unified MMA 45, Ksiazkiewicz was taken to the canvas in the second frame by undefeated Israeli standout Eli Aronov, who secured top mount and locked in an arm-triangle choke to finish the fight at 4:32.
WIN
Alessandro Gambulino
Italy
Italy
LFA 130 – Ksiazkiewicz vs. Gambulino
Apr / 22 / 2022
TKO (Knee to the Body and Punches)
Rnd 1 (1:29)
Apr / 22 / 2022
ROUND1
TIME1:29
METHODTKO
Bout Specifications & Fight Financials
View Dossier
🥊 LFA 130 Main Event • Ksiazkiewicz vs. Gambulino
Main Event Feature
Fighter MatchupMariusz Ksiazkiewicz vs Alessandro Gambulino
Fight Location New Town, North Dakota, United States (4 Bears Casino & Lodge)
New Town, North Dakota, United States (4 Bears Casino & Lodge)Duration3 x 5 min
Weights Matchup185.6 lbs vs 185.4 lbs
Alessandro Gambulino Record at Bout (Opponent)12-3-0
Mariusz Ksiazkiewicz Record at Bout9-1-0
💰 Pre-Fight Betting Odds
Mariusz Ksiazkiewicz: -175 (Favorite)
vs
Alessandro Gambulino: +145 (Underdog)
Officials
Ref: Aaron Menard
🥊 Action & Knockdowns:
Headlining LFA 130, Ksiazkiewicz cornered Italian fighter Gambulino against the cage, delivered a crushing knee to the solar plexus that folded him, and finished with follow-up punches to score an explosive first-round TKO in 1:29.
WIN
Graham Park
Canada
Canada
Unified MMA 42 – Unified MMA
Dec / 17 / 2021
KO (Punches)
Rnd 1 (1:25)
Dec / 17 / 2021
ROUND1
TIME1:25
METHODKO
Bout Specifications & Fight Financials
View Dossier
Unified MMA Super Middleweight Championship • Ksiazkiewicz vs. Park
Captured Unified MMA Title
Fighter MatchupMariusz Ksiazkiewicz vs Graham Park
Fight Location Enoch, Alberta, Canada (River Cree Resort and Casino)
Enoch, Alberta, Canada (River Cree Resort and Casino)Duration5 x 5 min
Weights Matchup195 lbs vs 195 lbs
Graham Park Record at Bout (Opponent)8-2-0
Mariusz Ksiazkiewicz Record at Bout8-1-0
Officials
Ref: Andy Social
🥊 Action & Knockdowns:
In the main event for the inaugural Super Middleweight Championship, Ksiazkiewicz connected with a vicious counter left-right hook combination on reigning light heavyweight king Graham Park, knocking him out cold in only 1:25 to claim the title.
LOSS
Mario Sousa
Brazil
Brazil
Dana White’s Contender Series – Contender Series 2020: Week 9
Nov / 10 / 2020
Decision (Unanimous)
Rnd 3 (5:00)
Nov / 10 / 2020
ROUND3
TIME5:00
METHODDecision
Bout Specifications & Fight Financials
View Dossier
🥊 UFC Contract Bout • Contender Series Season 4
DWCS Feature
Fighter MatchupMariusz Ksiazkiewicz vs Mario Sousa
Fight Location Las Vegas, Nevada, United States (UFC Apex)
Las Vegas, Nevada, United States (UFC Apex)Duration3 x 5 min
Weights Matchup185.5 lbs vs 185 lbs
Mario Sousa Record at Bout (Opponent)11-1-0
Mariusz Ksiazkiewicz Record at Bout8-0-0
💰 Pre-Fight Betting Odds
Mariusz Ksiazkiewicz: -165 (Favorite)
vs
Mario Sousa: +145 (Underdog)
Officials & Scorecards
Ref: Mark Smith
Judge 1: 30-27
Judge 2: 30-27
Judge 3: 29-28
🥊 Action & Knockdowns:
Compelling middleweight contest on Dana White’s Contender Series. Ksiazkiewicz pressed the action with wrestling takedowns early, but Sousa took over with heavy punching volume in the pocket across the latter rounds to earn a unanimous decision.
WIN
Guilherme Miranda
Brazil
Brazil
Teofista – Fight For The Troops
Nov / 09 / 2019
Submission (Rear-Naked Choke)
Rnd 1 (4:07)
Nov / 09 / 2019
ROUND1
TIME4:07
METHODSubmission
Bout Specifications & Fight Financials
View Dossier
🥊 Teofista Fight for the Troops Feature • Ksiazkiewicz vs. Miranda
Main Card Feature
Fighter MatchupMariusz Ksiazkiewicz vs Guilherme Miranda
Fight Location Calgary, Alberta, Canada (Deerfoot Inn & Casino)
Calgary, Alberta, Canada (Deerfoot Inn & Casino)Duration3 x 5 min
Weights Matchup185 lbs vs 185 lbs
Guilherme Miranda Record at Bout (Opponent)18-8-0
Mariusz Ksiazkiewicz Record at Bout7-0-0
🥊 Action & Knockdowns:
Ksiazkiewicz took Brazilian jiu-jitsu black belt Miranda to the canvas, methodically bypassed his guard, transitioned to back control, and forced the tap with a rear-naked choke at 4:07 of round one.
WIN
Jonathan Vallee
Canada
Canada
TKO MMA – TKO Fight Night 1
Aug / 02 / 2018
Submission (Rear-Naked Choke)
Rnd 3 (1:13)
Aug / 02 / 2018
ROUND3
TIME1:13
METHODSubmission
Bout Specifications & Fight Financials
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🥊 TKO Fight Night 1 Feature • Ksiazkiewicz vs. Vallee
Co-Main Event
Fighter MatchupMariusz Ksiazkiewicz vs Jonathan Vallee
Fight Location Montreal, Quebec, Canada (TOHU)
Montreal, Quebec, Canada (TOHU)Duration3 x 5 min
Weights Matchup185 lbs vs 185 lbs
Jonathan Vallee Record at Bout (Opponent)7-2-0
Mariusz Ksiazkiewicz Record at Bout6-0-0
🥊 Action & Knockdowns:
In a showdown between top Canadian middleweights, Ksiazkiewicz ground Vallee down across two grueling rounds before securing a third-round takedown, locking in a rear-naked choke to finish at 1:13.
WIN
Douglas McFresh
United States
United States
AFC 126 – Heun vs. Matavao
Oct / 19 / 2016
KO (Elbows)
Rnd 1 (1:20)
Oct / 19 / 2016
ROUND1
TIME1:20
METHODKO
Bout Specifications & Fight Financials
View Dossier
🥊 AFC 126 Light Heavyweight Bout • Ksiazkiewicz vs. McFresh
Featured Bout
Fighter MatchupMariusz Ksiazkiewicz vs Douglas McFresh
Fight Location Anchorage, Alaska, United States (Sullivan Arena)
Anchorage, Alaska, United States (Sullivan Arena)Duration3 x 5 min
Weights Matchup205 lbs vs 205 lbs
Douglas McFresh Record at Bout (Opponent)6-12-0
Mariusz Ksiazkiewicz Record at Bout5-0-0
Officials
Ref: Paul Stockler
🥊 Action & Knockdowns:
Moving up to 205 lbs in Alaska, Ksiazkiewicz took McFresh down with authority, moved directly to full mount, and rained down a barrage of slicing elbows to earn a brutal knockout in only 1:20.
WIN
Micah Brakefield
Canada
Canada
Prestige FC 2 – Queen City Coronation
Mar / 12 / 2016
TKO (Retirement)
Rnd 2 (5:00)
Mar / 12 / 2016
ROUND2
TIME5:00
METHODTKO
Bout Specifications & Fight Financials
View Dossier
🥊 Prestige FC 2 Feature • Ksiazkiewicz vs. Brakefield
Featured Bout
Fighter MatchupMariusz Ksiazkiewicz vs Micah Brakefield
Fight Location Regina, Saskatchewan, Canada (Casino Regina Show Lounge)
Regina, Saskatchewan, Canada (Casino Regina Show Lounge)Duration3 x 5 min
Weights Matchup185 lbs vs 185 lbs
Micah Brakefield Record at Bout (Opponent)6-6-0
Mariusz Ksiazkiewicz Record at Bout4-0-0
Officials
Ref: Phil Koldyk
🥊 Action & Knockdowns:
Ksiazkiewicz dominated Brakefield from top position with vicious ground-and-pound strikes across two frames, inflicting enough punishment that Brakefield was unable to continue into round three.
WIN
Steve Dubeck
Canada
Canada
KOTC – Out Cold
Nov / 15 / 2013
Submission (Rear-Naked Choke)
Rnd 2 (3:53)
Nov / 15 / 2013
ROUND2
TIME3:53
METHODSubmission
Bout Specifications & Fight Financials
View Dossier
🥊 King of the Cage Welterweight Bout • Ksiazkiewicz vs. Dubeck
Featured Bout
Fighter MatchupMariusz Ksiazkiewicz vs Steve Dubeck
Fight Location Cold Lake, Alberta, Canada (Energy Centre)
Cold Lake, Alberta, Canada (Energy Centre)Duration3 x 5 min
Weights Matchup170 lbs vs 170 lbs
Steve Dubeck Record at Bout (Opponent)1-1-0
Mariusz Ksiazkiewicz Record at Bout3-0-0
Officials
Ref: Phil Koldyk
🥊 Action & Knockdowns:
Ksiazkiewicz out-wrestled Dubeck, passing guard in round two to gain back control and sink in a textbook rear-naked choke to force the tap at 3:53.
WIN
Ash Mashreghi
Canada
Canada
AFC 16 – Uprising
Mar / 23 / 2013
Submission (Rear-Naked Choke)
Rnd 1 (1:55)
Mar / 23 / 2013
ROUND1
TIME1:55
METHODSubmission
Bout Specifications & Fight Financials
View Dossier
🥊 AFC 16 Welterweight Showcase • Ksiazkiewicz vs. Mashreghi
Featured Bout
Fighter MatchupMariusz Ksiazkiewicz vs Ash Mashreghi
Fight Location Calgary, Alberta, Canada (Stampede Corral)
Calgary, Alberta, Canada (Stampede Corral)Duration3 x 5 min
Weights Matchup170 lbs vs 170 lbs
Ash Mashreghi Record at Bout (Opponent)1-0-0
Mariusz Ksiazkiewicz Record at Bout2-0-0
🥊 Action & Knockdowns:
Ksiazkiewicz executed a power double-leg takedown inside the opening minute, rapidly took back control, and slipped in a rear-naked choke to elicit the tapout at 1:55 of round one.
WIN
Dejan Kajic
Canada
Canada
AFC 11 – Takeover
Sep / 15 / 2012
Decision (Unanimous)
Rnd 3 (5:00)
Sep / 15 / 2012
ROUND3
TIME5:00
METHODDecision
Bout Specifications & Fight Financials
View Dossier
🥊 AFC 11 Feature • Ksiazkiewicz vs. Kajić
Featured Bout
Fighter MatchupMariusz Ksiazkiewicz vs Dejan Kajić
Fight Location Winnipeg, Manitoba, Canada (Winnipeg Convention Centre)
Winnipeg, Manitoba, Canada (Winnipeg Convention Centre)Duration3 x 5 min
Weights Matchup170 lbs vs 170 lbs
Dejan Kajic Record at Bout (Opponent)1-0-0
Mariusz Ksiazkiewicz Record at Bout1-0-0
Officials
Ref: Philip Koldyk
🥊 Action & Knockdowns:
Fighting before his home crowd in Winnipeg, Ksiazkiewicz displayed dominant positional wrestling, grounding future multi-division champion Dejan Kajić across three rounds to take a clear unanimous decision.
WIN
Henry Rowsell
Canada
Canada
CFM 2 – Cage Fighting Manitoba 2
May / 13 / 2011
Submission (Rear-Naked Choke)
Rnd 1 (0:27)
May / 13 / 2011
ROUND1
TIME0:27
METHODSubmission
Bout Specifications & Fight Financials
View Dossier
🥊 Professional MMA Debut • Ksiazkiewicz vs. Rowsell
Pro Debut
Fighter MatchupMariusz Ksiazkiewicz vs Henry Rowsell
Fight Location Winnipeg, Manitoba, Canada (Canwest Centre)
Winnipeg, Manitoba, Canada (Canwest Centre)Duration3 x 5 min
Weights Matchup170 lbs vs 170 lbs
Henry Rowsell Record at Bout (Opponent)0-0-0 (Debut)
Mariusz Ksiazkiewicz Record at Bout0-0-0 (Debut)
🥊 Action & Knockdowns:
In his professional mixed martial arts debut, Ksiazkiewicz blitzed across the cage, scored an immediate double-leg takedown, took Rowsell’s back, and locked in a rear-naked choke to secure victory in just 27 seconds.
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