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Koichi Ishizuka

  Koichi Ishizuka's profile at Sherdog 

Koichi Ishizuka's profile at Tapology 

Birth Date: 1987-02-26
Last 5: W W L W W
Association: Freelance
Pro Debut Date: 2012-03-03
Pro Record: 21-6-1
Current Ranking:
#208 Bantamweight
'Big League' Record: 21-6-1
Last 3 Years: 3-1-0
Win Finish %: 61.9%
Combat Age: 45
Quality Perf. %: 71.4%
Last Quality Perf.: 2025-12-14
540 Metric: .706
Rating Points: 53
Highest Quarterly Ranking: 1/01/2016

#92 Bantamweight
Last Fight Date: 12/14/2025 [DEEP]
Last Opponent: [#352 BW] Yasuhiro Kawamura
Opponent's Last 5: W W L W L
Last Loss Date: 9/18/2023
Last Loss: [#60 BW] Su Young You
Opponent's Last 5: W W W W W

Complete Professional MMA Fight History
Fighter rankings represent most recent generated quarterly rating prior to the fight

  Opponent Outcome
W Yasuhiro Kawamura
#232 Bantamweight 		Decision (Unanimous)
Round 3
  Deep - 129 Impact
Sunday, December 14th 2025
W Akira Haraguchi
#310 Featherweight 		Decision (Split)
Round 3
  Deep - Tokyo Impact 2024 3rd Round
Sunday, May 26th 2024
L Su Young You
#289 Featherweight 		TKO (Elbows and Punches)
Round 1
  Deep - 115 Impact: Deep vs. Black Combat
Monday, September 18th 2023
W Yuto Hokamura
#261 Bantamweight 		Decision (Split)
Round 3
  Rizin FF - Rizin 41
Saturday, April 1st 2023
W Kosuke Terashima
#214 Bantamweight 		Decision (Unanimous)
Round 3
  Deep - 110 Impact
Saturday, November 12th 2022
W Seigo Yamamoto TKO (Punches)
Round 2
  Deep - 109 Impact
Sunday, August 21st 2022
W Wataru Mimura
#472 Bantamweight 		KO (Punch)
Round 1
  Deep - Tokyo Impact 2022 1st Round
Saturday, March 12th 2022
W Kunihisa Sasa
#252 Bantamweight 		Submission (Triangle Choke)
Round 3
  Deep - 105 Impact
Sunday, December 12th 2021
W Kosuke Terashima
#243 Bantamweight 		Decision (Split)
Round 2
  Deep - 101 Impact
Sunday, June 20th 2021
L Chihaya Yoneyama
#249 Bantamweight 		TKO
Round 1
  DEEP 92 Impact
Tuesday, October 22nd 2019
L Rikuto Shirakawa
#399 Bantamweight 		Decision (Split)
Round 2
  DEEP 90 Impact
Saturday, June 29th 2019
W Shoji Maruyama
#497 Featherweight 		TKO
Round 2
  DEEP 88 Impact
Saturday, March 9th 2019
L Daiki Hata
#253 Featherweight 		Decision (Unanimous)
Round 3
  Deep - 87 Impact
Saturday, December 22nd 2018
W Fuhito Hasegawa
#500 Bantamweight 		Decision (Unanimous)
Round 2
  Deep - 86 Impact
Saturday, October 27th 2018
W Kazuhide Shirota
#445 Bantamweight 		TKO (Punches)
Round 1
  DEEP 82 Impact
Saturday, February 24th 2018
W Nak Joong Sung Submission (Rear Naked Choke)
Round 1
  Deep - 81 Impact
Saturday, December 23rd 2017
L Hiroto Uesako
#317 Featherweight 		KO (Soccer Kick)
Round 3
  Deep - Cage Impact 2017 in Korakuen Hall
Saturday, July 15th 2017
L Takafumi Otsuka
#112 Bantamweight 		Decision (Split)
Round 3
  Deep - Cage Impact 2017
Saturday, May 13th 2017
W Toshiaki Kitada
#90 Bantamweight 		Decision (Majority)
Round 3
  Deep - Cage Impact 2016: Deep vs. WSOF-GC
Saturday, December 17th 2016
W Makoto Kamaya
#173 Bantamweight 		KO (Punch)
Round 1
  Deep - Cage Impact 2015
Monday, July 20th 2015
W Daisuke Endo
#273 Bantamweight 		Decision (Unanimous)
Round 3
  Deep - 70 Impact
Sunday, December 21st 2014
W Hiroyuki Kobayashi
#263 Bantamweight 		Submission (Rear Naked Choke)
Round 2
  Deep - Cage Impact 2014
Monday, July 21st 2014
D Seiji Akao
#137 Bantamweight 		Draw
Round 2
  DEEP 65 Impact
Saturday, March 22nd 2014
W Yoshiki Harada
#244 Bantamweight 		Submission (Rear Naked Choke)
Round 1
  DEEP Cage Impact 2013: Korakuen Hall
Saturday, June 15th 2013
W Katsuya Ishida Submission (Rear-Naked Choke)
Round 1
  DEEP 60 Impact
Friday, October 19th 2012
W Yasufumi Suzaki
#350 Bantamweight 		TKO (Punches)
Round 1
  Deep - Tokyo Impact 2012 in Differ Ariake
Saturday, July 21st 2012
W Minotauro Hutt TKO (Punches)
Round 2
  Deep - Cage Impact 2012 in Tokyo: Over Again
Saturday, April 7th 2012
W Motoki Konno
#588 Featherweight 		TKO (Punches)
Round 1
  Deep / Smash - Japan MMA League 2011 Finals
Saturday, March 3rd 2012
  Opponent Event Outcome
W Yasuhiro Kawamura
#232 Bantamweight 		  Deep - 129 Impact
Sunday, December 14th 2025 		Decision (Unanimous)
Round 3
W Akira Haraguchi
#310 Featherweight 		  Deep - Tokyo Impact 2024 3rd Round
Sunday, May 26th 2024 		Decision (Split)
Round 3
L Su Young You
#289 Featherweight 		  Deep - 115 Impact: Deep vs. Black Combat
Monday, September 18th 2023 		TKO (Elbows and Punches)
Round 1
W Yuto Hokamura
#261 Bantamweight 		  Rizin FF - Rizin 41
Saturday, April 1st 2023 		Decision (Split)
Round 3
W Kosuke Terashima
#214 Bantamweight 		  Deep - 110 Impact
Saturday, November 12th 2022 		Decision (Unanimous)
Round 3
W Seigo Yamamoto   Deep - 109 Impact
Sunday, August 21st 2022 		TKO (Punches)
Round 2
W Wataru Mimura
#472 Bantamweight 		  Deep - Tokyo Impact 2022 1st Round
Saturday, March 12th 2022 		KO (Punch)
Round 1
W Kunihisa Sasa
#252 Bantamweight 		  Deep - 105 Impact
Sunday, December 12th 2021 		Submission (Triangle Choke)
Round 3
W Kosuke Terashima
#243 Bantamweight 		  Deep - 101 Impact
Sunday, June 20th 2021 		Decision (Split)
Round 2
L Chihaya Yoneyama
#249 Bantamweight 		  DEEP 92 Impact
Tuesday, October 22nd 2019 		TKO
Round 1
L Rikuto Shirakawa
#399 Bantamweight 		  DEEP 90 Impact
Saturday, June 29th 2019 		Decision (Split)
Round 2
W Shoji Maruyama
#497 Featherweight 		  DEEP 88 Impact
Saturday, March 9th 2019 		TKO
Round 2
L Daiki Hata
#253 Featherweight 		  Deep - 87 Impact
Saturday, December 22nd 2018 		Decision (Unanimous)
Round 3
W Fuhito Hasegawa
#500 Bantamweight 		  Deep - 86 Impact
Saturday, October 27th 2018 		Decision (Unanimous)
Round 2
W Kazuhide Shirota
#445 Bantamweight 		  DEEP 82 Impact
Saturday, February 24th 2018 		TKO (Punches)
Round 1
W Nak Joong Sung   Deep - 81 Impact
Saturday, December 23rd 2017 		Submission (Rear Naked Choke)
Round 1
L Hiroto Uesako
#317 Featherweight 		  Deep - Cage Impact 2017 in Korakuen Hall
Saturday, July 15th 2017 		KO (Soccer Kick)
Round 3
L Takafumi Otsuka
#112 Bantamweight 		  Deep - Cage Impact 2017
Saturday, May 13th 2017 		Decision (Split)
Round 3
W Toshiaki Kitada
#90 Bantamweight 		  Deep - Cage Impact 2016: Deep vs. WSOF-GC
Saturday, December 17th 2016 		Decision (Majority)
Round 3
W Makoto Kamaya
#173 Bantamweight 		  Deep - Cage Impact 2015
Monday, July 20th 2015 		KO (Punch)
Round 1
W Daisuke Endo
#273 Bantamweight 		  Deep - 70 Impact
Sunday, December 21st 2014 		Decision (Unanimous)
Round 3
W Hiroyuki Kobayashi
#263 Bantamweight 		  Deep - Cage Impact 2014
Monday, July 21st 2014 		Submission (Rear Naked Choke)
Round 2
D Seiji Akao
#137 Bantamweight 		  DEEP 65 Impact
Saturday, March 22nd 2014 		Draw
Round 2
W Yoshiki Harada
#244 Bantamweight 		  DEEP Cage Impact 2013: Korakuen Hall
Saturday, June 15th 2013 		Submission (Rear Naked Choke)
Round 1
W Katsuya Ishida   DEEP 60 Impact
Friday, October 19th 2012 		Submission (Rear-Naked Choke)
Round 1
W Yasufumi Suzaki
#350 Bantamweight 		  Deep - Tokyo Impact 2012 in Differ Ariake
Saturday, July 21st 2012 		TKO (Punches)
Round 1
W Minotauro Hutt   Deep - Cage Impact 2012 in Tokyo: Over Again
Saturday, April 7th 2012 		TKO (Punches)
Round 2
W Motoki Konno
#588 Featherweight 		  Deep / Smash - Japan MMA League 2011 Finals
Saturday, March 3rd 2012 		TKO (Punches)
Round 1

Quarterly Generated Historical Rankings
Rating bar represents the fighter's standing relative to the top of the division at the time

Date ↑ ↓ Rank Record Points
07/01/2025 20 #299 Bantamweight 20-6-1
39
04/01/2025 1 #279 Bantamweight 20-6-1
41
01/01/2025 4 #278 Bantamweight 20-6-1
41
10/01/2024 21 #274 Bantamweight 20-6-1
41
07/01/2024 19 #253 Bantamweight 20-6-1
41
04/01/2024 3 #272 Bantamweight 19-6-1
38
01/01/2024 34 #275 Bantamweight 19-6-1
38
10/01/2023 100 #241 Bantamweight 19-6-1
42
07/01/2023 15 #141 Bantamweight 19-5-1
57
04/01/2023 13 #126 Bantamweight 19-5-1
59
01/01/2023 67 #139 Bantamweight 18-5-1
57
10/01/2022 5 #206 Bantamweight 17-5-1
44
07/01/2022 6 #201 Bantamweight 16-5-1
44
04/01/2022 50 #195 Bantamweight 16-5-1
44
01/01/2022 106 #245 Bantamweight 15-5-1
37
10/01/2021 30 #351 Bantamweight 14-5-1
28
07/01/2021 NR #321 Bantamweight 14-5-1
28
01/01/2021 15 #408 Bantamweight 13-5-1
26
10/01/2020 8 #393 Bantamweight 13-5-1
28
07/01/2020 44 #401 Bantamweight 13-5-1
29
04/01/2020 13 #357 Bantamweight 13-5-1
32
01/01/2020 NR #344 Bantamweight 13-5-1
32
10/01/2019 30 #446 Featherweight 13-4-1
30
07/01/2019 NR #416 Featherweight 13-4-1
30
04/01/2019 55 #164 Bantamweight 13-3-1
49
01/01/2019 41 #219 Bantamweight 12-3-1
39
10/01/2018 7 #178 Bantamweight 11-2-1
43
07/01/2018 12 #185 Bantamweight 11-2-1
43
04/01/2018 53 #173 Bantamweight 11-2-1
43
01/01/2018 NR #226 Bantamweight 10-2-1
36
10/01/2017 NR #412 Featherweight 9-2-1
30
07/01/2017 9 #125 Bantamweight 9-1-1
48
04/01/2017 2 #116 Bantamweight 9-0-1
50
01/01/2017 31 #114 Bantamweight 9-0-1
50
10/01/2016 35 #145 Bantamweight 8-0-1
44
07/01/2016 17 #110 Bantamweight 8-0-1
49
04/01/2016 1 #93 Bantamweight 8-0-1
54
01/01/2016 5 #92 Bantamweight 8-0-1
54
10/01/2015 53 #97 Bantamweight 8-0-1
54
07/01/2015 1 #150 Bantamweight 7-0-1
42
04/01/2015 11 #149 Bantamweight 7-0-1
42
01/01/2015 2 #138 Bantamweight 7-0-1
42
10/01/2014 69 #140 Bantamweight 6-0-1
39
07/01/2014 20 #209 Bantamweight 5-0-1
30
04/01/2014 22 #189 Bantamweight 5-0-1
31
01/01/2014 28 #211 Bantamweight 5-0-0
28
10/01/2013 11 #183 Bantamweight 5-0-0
30
07/01/2013 48 #172 Bantamweight 5-0-0
30
04/01/2013 12 #220 Bantamweight 4-0-0
26
01/01/2013 36 #208 Bantamweight 4-0-0
26
10/01/2012 153 #244 Bantamweight 3-0-0
24
07/01/2012 NR #397 Bantamweight 2-0-0
18
04/01/2012 NR #566 Featherweight 1-0-0
18


A fighter's rank (US) state is assigned based on the state that the fighter most frequently fought in professionally, within the past three years. If there is a tie, the most recent state is used. The Win-Loss-Draw record for the fighter in the "Big Leagues". The Big Leagues refer to the top organizations based on a statistical analysis we performed. Some organizations were counted as one, due to mergers, etc. A quality performance is a fight in which the fighter fought an acceptable opponent, and substantiated their current rating (at the time) based on the outcome. At it's most basic level, one can equate "combat age" to "dog years" in that it will mirror the basic human lifecycle. With this computation, we expect fighters to hit their respective "peak" in the years that your typical adult "peaks" in life, somewhere between 25 and 40. We will expect most fighters to start their descent at some point in their 40s and be far removed from their peak by 60. This is an experimental metric that attempts to reflect a fighter's recent opposition quality. The metric goes back 1,080 days, and looks at all the fighter's opponents' W-L-D records within a window of 540 days before, and 540 days after their respective bout(s) with the fighter. All of the records are added up and the cumulative win percentage is presented by this metric in a "strength of schedule" format. These ranking sets have been generated by a recent version of the software, using recent data and will not match previously published issues of the rankings, especially since a majority of these generated sets are for dates much earlier than the site’s inception.

Current MMA Rankings

  • Pound for Pound
  • Division Point Dominance
  • Heavyweight+
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  • Bantamweight
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  • Strawweight
  • Women’s Pound for Pound
  • Women’s Division Point Dominance
  • Women’s Featherweight+
  • Women’s Bantamweight
  • Women’s Flyweight
  • Women’s Strawweight
  • Women’s Atomweight
  • Unknown Division

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