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Sergiusz Zając
9-1
#8 L. heavyweight Odds
1.45 2.75
Mariusz Książkiewicz
11-3

Fight: Zając vs. Książkiewicz

20 SEP SAT '25 5:00 PM
main card 3 rounds

Main Info

nickname

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The Iron Pol

Forms

W W W W W
W L W W L

Nationality

Poland Poland

Canada Canada

Age

(1998-10-09) 27

36 (1989-10-04)

Weight

(95 kg) 209.4 lbs

209.4 lbs (95 kg)

Height

(194 cm) 6′4″

6′3″ (191 cm)

Reach

(189 cm) 6′2″

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Social Media

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-

Win-Loss Records

Wins

9

8 KO/TKO - 80%
0 submission - 0%
1 decision - 10%

11

36% - 5 KO/TKO
36% - 5 submission
7% - 1 decision

Losses

1

0 KO/TKO - 0%
1 submission - 10%
0 decision - 0%

3

7% - 1 KO/TKO
7% - 1 submission
7% - 1 decision

Past Opponents

Show Cancelled Fights

Frequently Asked Questions About Zając vs. Książkiewicz

  • Which event are Mariusz Książkiewicz and Sergiusz Zając fighting in?

    They are set to face each other in KSW 110: Grzebyk vs. Tulshaev.

  • How many rounds is the Mariusz Książkiewicz vs. Sergiusz Zając?

    The bout is scheduled for a standard 3-round KSW fight.

  • Which organization is hosting the Mariusz Książkiewicz vs. Sergiusz Zając?

    The fight is organized by the Konfrontacja Sztuk Walki (KSW).

  • When is the Mariusz Książkiewicz vs. Sergiusz Zając fight?

    The fight is scheduled to take place on September 20, 2025

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