Fight Night Combat - Jan Zdunkiewicz

Jan Zdunkiewicz

Full name:	Jan Zdunkiewicz
Current rank:	55th	since October 13, 2025
Highest Rank:	55th	first reached September 29, 2025 (2 weeks in total)
Highest Year-End Rank:	75th	(2021)
Titles/finals:	0/0
Elo Rating:	1446

Profile Tournaments Matches Rankings Rivalries

Elo Ratings per Match since January 2013

Choose a table: Match scores, player Elo ratings, player rankings.

A player's elo rating is considered provisional (P) until they have either completed six matches or played matches at at least three different tournaments.

The probability of winning is equal to the predicted share of points scored. A player rated 200 above another corresponds to a 76% chance of winning.

The K value is a development coefficient, and it reduces large swings in the ratings of established players. The K value reduces over time, similar to 538's elo ratings for tennis players: 250/((player's match count+15)**(0.4)))-10

Click on column headers to sort the table.

Date	Tournament	Round	Opponent	Elo Rating Player	Opponent	Difference	Share of Points Predicted	Actual	Difference	Final Result Predicted	Actual	Difference	K-Factor	Next Elo	Change
2025‑08‑20	Enklawa 2025	third place match	Grzegorz Jastrzębski	Won	1407	1563	-156	28.9 %	62.5 %	+33.6 %	Lose	Won	Upset Win	55	1446	+39
2025‑08‑20	Enklawa 2025	semi-final	Sebastian Siwiec	Lost	1416	1706	-290	15.9 %	37.5 %	+21.6 %	Lose	Lost	-	55	1407	-9
2025‑08‑20	Enklawa 2025	round of 8	Miłosz Budka	Won	1386	1421	-35	45.0 %	62.5 %	+17.5 %	Lose	Won	Upset Win	56	1416	+30
2025‑08‑16	OFCA 2025	round of 8	Krzysztof Kostera	Lost	1391	1826	-435	7.6 %	16.7 %	+9.1 %	Lose	Lost	-	57	1386	-5
2025‑01‑30	Enklawa Winter 2025	round of 8	Jerzy Kozłowski	Lost	1401	1683	-282	16.5 %	16.7 %	+0.2 %	Lose	Lost	-	58	1391	-10
2024‑08‑23	Ostroda 2024	round of 8	Sebastian Siwiec	Lost	1414	1645	-231	20.9 %	44.4 %	+23.5 %	Lose	Lost	-	60	1401	-13
2024‑08‑23	Ostroda 2024	round of 16	Łukasz -Otto- Wójcik	Won	1384	1388	-4	49.4 %	83.3 %	+33.9 %	Lose	Won	Upset Win	61	1414	+30
2023‑07‑28	Carnaval Sztukmistrzow 2023	round of 8	Krzysztof Kostera	Lost	1390	1800	-410	8.6 %	0.0 %	-8.6 %	Lose	Lost	-	62	1384	-6
2023‑07‑20	Ostroda 2023	round of 8	Sebastian Siwiec	Lost	1414	1500 P	-86	37.9 %	37.5 %	-0.4 %	Lose	Lost	-	63	1390	-24
2022‑07‑30	Carnaval Sztukmistrzow 2022	round of 8	Marcin Borkowski	Lost	1447	1445	+2	50.3 %	0.0 %	-50.3 %	Win	Lost	Upset Loss	65	1414	-33
2022‑07‑23	Ostroda 2022	third place match	Krzysztof Czarski	Lost	1478	1500	-22	46.8 %	37.5 %	-9.3 %	Lose	Lost	-	66	1447	-31
2022‑07‑23	Ostroda 2022	semi-final	Jerzy Kozłowski	Lost	1504	1591	-87	37.7 %	0.0 %	-37.7 %	Lose	Lost	-	68	1478	-26
2022‑07‑23	Ostroda 2022	round of 8	Jakub Czekała	Won	1458 P	1577	-119	33.5 %	62.5 %	+29.0 %	Lose	Won	Win	70	1504	+46
2021‑08‑20	Ostroda 2021	round of 8	Krzysztof Kostera	Lost	1474 P	1698	-224	21.6 %	0.0 %	-21.6 %	Lose	Lost	-	72	1458 P	-16
2019‑08‑24	Ostroda 2019	round of 8	Jakub Czekała	Lost	1500 P	1616	-116	33.9 %	0.0 %	-33.9 %	Lose	Lost	-	74	1474 P	-26