Mariusz Książkiewicz
UFC DebutNickname“The Iron Pol”
Record
Streak
L1
Age
Date of birth
- Fighting out of
- Winnipeg, Manitoba
- Born
- Germany
- Weight class
- Light Heavyweight
- Height
- 6'3" · 191 cm
Before the UFC
Mariusz Książkiewicz makes their UFC debut
Our striking, grappling, and schedule metrics are measured from UFC fights, so they come online after this bout. Here is the career they bring in — and how live the opposition has been.
UFC debut
Jul 3, 2026
Pre-UFC opposition
StrongOpponents' combined record
123-75-2
.621 win rate
Winning-record opponents
9 of 13
carried winning pro records
Pro bouts faced
13
all opponents have records on file
A descriptive read of the non-UFC slate from opponents’ full career pro records — not a UFC-grade Schedule Score.
UFC fight history
No UFC bouts on record yet.
Outside the UFC
across 14 bouts · 14 promotions · wins by 5 KO · 5 sub · 1 decKSW 110 · Ignite Fights · Unified MMA 45 · LFA · Unified MMA 42 +9
| Res | Opponent | Outcome | Finish | Rd | Time | Promotion | Date |
|---|---|---|---|---|---|---|---|
| L | KO/TKO | Punches | R1 | 1:07 | KSW 110 | ||
| W | Rafael Carvalho17-9 | KO/TKO | Punches | R4 | 0:47 | Ignite Fights | |
| L | Eli Aronov6-2 | Submission | Arm-Triangle Choke | R2 | 4:32 | Unified MMA 45 | |
| W | KO/TKO | Knee to the Body and Punches | R1 | 1:29 | LFA | ||
| W | Graham Park8-4 | KO/TKO | Punches | R1 | 1:25 | Unified MMA 42 | |
| L | Mário Sousa21-4-1 | Decision | 30–27, 29–28, 29–28 | R3 | 5:00 | Dana White's Contender Series | |
| W | Submission | Rear-Naked Choke | R1 | 4:07 | Teofista | ||
| W | Submission | Rear-Naked Choke | R3 | 1:13 | TKO MMA | ||
| W | KO/TKO | Elbows | R1 | 1:20 | AFC 126 | ||
| W | KO/TKO | Retirement | R2 | 5:00 | Prestige FC 2 | ||
| W | Steve Dubeck5-7 | Submission | Rear-Naked Choke | R2 | 3:53 | KOTC | |
| W | Ash Mashreghi10-10 | Submission | Rear-Naked Choke | R1 | 1:55 | AFC 16 | |
| W | Dejan Kajic19-9-2 | Decision | Unanimous | R3 | 5:00 | AFC 11 | |
| W | Submission | Rear-Naked Choke | R1 | 0:27 | CFM 2 |
Non-UFC bouts (regional/other promotions) and Dana White’s Contender Series — shown for context only, excluded from Schedule Score, striking/grappling rates, and every UFC-scoped metric.
Amateur
2-1across 3 amateur bouts · 3 promotionsAFXC 1 · RG · UMAC
| Res | Opponent | Outcome | Finish | Rd | Time | Promotion | Date |
|---|---|---|---|---|---|---|---|
| L | KO/TKO | Punches | R1 | 0:00 | AFXC 1 | ||
| W | Heath Rud6-2 | Submission | Kimura | R2 | 1:30 | RG | |
| W | Jason Ungar0-1 | Submission | Armbar | R1 | 1:21 | UMAC |
Amateur (pre-professional) bouts — shown for context only and excluded from the professional record and every UFC-scoped metric.