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Kei Maezono

  Kei Maezono's profile at Sherdog 

Kei Maezono's profile at Tapology 

Birth Date: 1999-04-03
Last 5: W L L L L
Association: Yoshida Dojo
Pro Debut Date: 2022-08-28
Pro Record: 7-4-0
Current Ranking:
#907 Bantamweight
'Big League' Record: 7-3-0
Last 3 Years: 5-4-0
Win Finish %: 57.1%
Combat Age: 29
Quality Perf. %: 54.5%
Last Quality Perf.: 2024-06-02
540 Metric: .587
Rating Points: 19
Highest Quarterly Ranking: 4/01/2024

#402 Featherweight
Last Fight Date: 9/21/2025 [DEEP]
Last Opponent: [#583 BW] Ren Ozaki
Opponent's Last 5: W L W W L

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

  Opponent Outcome
L Ren Ozaki
#413 Bantamweight 		Decision (Unanimous)
Round 3
  Deep - Osaka Impact 2025 4th Round
Sunday, September 21st 2025
L Gezhen Re
#501 Featherweight 		Submission (Armbar)
Round 3
  WKG & M-1 Global - MMA Fight in Aksu
Tuesday, May 20th 2025
L Kazuki Aimoto
#339 Featherweight 		TKO (Punches)
Round 1
  Deep - Tokyo Impact 2024 6th Round
Sunday, December 8th 2024
L Su Hwan Oh
#1142 Lightweight 		Decision (Unanimous)
Round 3
  One Championship - One Friday Fights 79
Friday, September 13th 2024
W Rafael Yuji Pereira Decision (Unanimous)
Round 2
  Deep - Osaka Impact 2024 2nd Round
Sunday, June 2nd 2024
W Asilbek Madaminov Submission (Rear-Naked Choke)
Round 1
  Deep - Tokyo Impact 2024 1st Round
Sunday, March 24th 2024
W Seiki Kuwamoto
#997 Featherweight 		Decision (Unanimous)
Round 2
  Deep - Osaka Impact 2023 3rd Round
Sunday, November 26th 2023
W Motonori Takiguchi
#500 Featherweight 		Submission (Arm-Triangle Choke)
Round 3
  Deep - Osaka Impact 2023 2nd Round
Sunday, July 30th 2023
W Yuki Saito Decision (Unanimous)
Round 2
  Deep - Osaka Impact 2023 1st Round
Sunday, April 2nd 2023
W Hiroto Saido TKO (Punches)
Round 2
  Deep - Osaka Impact 2022 4th Round
Sunday, December 18th 2022
W Ichiki Tanaka Submission (Rear-Naked Choke)
Round 1
  Deep - Osaka Impact 2022 3rd Round
Sunday, August 28th 2022
  Opponent Event Outcome
L Ren Ozaki
#413 Bantamweight 		  Deep - Osaka Impact 2025 4th Round
Sunday, September 21st 2025 		Decision (Unanimous)
Round 3
L Gezhen Re
#501 Featherweight 		  WKG & M-1 Global - MMA Fight in Aksu
Tuesday, May 20th 2025 		Submission (Armbar)
Round 3
L Kazuki Aimoto
#339 Featherweight 		  Deep - Tokyo Impact 2024 6th Round
Sunday, December 8th 2024 		TKO (Punches)
Round 1
L Su Hwan Oh
#1142 Lightweight 		  One Championship - One Friday Fights 79
Friday, September 13th 2024 		Decision (Unanimous)
Round 3
W Rafael Yuji Pereira   Deep - Osaka Impact 2024 2nd Round
Sunday, June 2nd 2024 		Decision (Unanimous)
Round 2
W Asilbek Madaminov   Deep - Tokyo Impact 2024 1st Round
Sunday, March 24th 2024 		Submission (Rear-Naked Choke)
Round 1
W Seiki Kuwamoto
#997 Featherweight 		  Deep - Osaka Impact 2023 3rd Round
Sunday, November 26th 2023 		Decision (Unanimous)
Round 2
W Motonori Takiguchi
#500 Featherweight 		  Deep - Osaka Impact 2023 2nd Round
Sunday, July 30th 2023 		Submission (Arm-Triangle Choke)
Round 3
W Yuki Saito   Deep - Osaka Impact 2023 1st Round
Sunday, April 2nd 2023 		Decision (Unanimous)
Round 2
W Hiroto Saido   Deep - Osaka Impact 2022 4th Round
Sunday, December 18th 2022 		TKO (Punches)
Round 2
W Ichiki Tanaka   Deep - Osaka Impact 2022 3rd Round
Sunday, August 28th 2022 		Submission (Rear-Naked Choke)
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
01/01/2026 5 #912 Bantamweight 7-4-0
19
10/01/2025 NR #917 Bantamweight 7-4-0
19
07/01/2025 111 #1043 Featherweight 7-3-0
19
04/01/2025 20 #932 Featherweight 7-2-0
20
01/01/2025 NR #952 Featherweight 7-2-0
20
10/01/2024 NR #880 Lightweight 7-1-0
21
07/01/2024 43 #445 Featherweight 7-0-0
31
04/01/2024   #402 Featherweight 6-0-0
33
01/01/2024 63 #402 Featherweight 5-0-0
33
10/01/2023 428 #465 Featherweight 4-0-0
30
07/01/2023 125 #893 Featherweight 3-0-0
19
04/01/2023 13 #1018 Featherweight 2-0-0
17
01/01/2023 NR #1005 Featherweight 2-0-0
17


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.

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