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Fight Matrix

Seiya Ameyama

Issue Date: 11/08/2026 (Official Release: #1049)
  Seiya Ameyama's profile at Sherdog 

Seiya Ameyama's profile at Tapology 

Birth Date: 2002-10-23
Last 5: W NC W L L
Association: Encounter MMA Training & Fitness Gym
Pro Debut Date: 2023-07-30
Pro Record: 6-5-0
Current Ranking:
#1019 Bantamweight
'Big League' Record: 6-5-0
Last 3 Years: 6-4-0
Win Finish %: 100%
Combat Age: 24
Quality Perf. %: 36.4%
Last Quality Perf.: 2026-03-07
540 Metric: .559
Rating Points: 18
Highest Quarterly Ranking: 7/01/2025

#264 Flyweight
Last Fight Date: 9/06/2026 [DEEP]
Last Opponent: [#496 BW] Taito Kubota
Opponent's Last 5: W W L L W

Complete Professional MMA Fight History


Fighter rankings represent most recent generated quarterly rating prior to the fight

  Opponent Outcome
L Taito Kubota
#671 Bantamweight 		Submission (Twister)
Round 1
  Deep Tokyo Impact 2026 4th Round
Sunday, September 6th 2026
L Joe Hiramoto Submission (Rear-Naked Choke)
Round 2
  Rizin FF - Rizin 53
Sunday, May 10th 2026
W Taichi Oizumi TKO (Punches)
Round 1
  DEEP Osaka Impact 2026 1st Round
Saturday, March 7th 2026
NC Haruto Sunada NC
Round 0
  DEEP Osaka Impact 2025 5th Round
Saturday, December 6th 2025
W Tomohiro Adaniya
#510 Bantamweight 		TKO (Doctor Stoppage)
Round 1
  Deep Osaka Impact 2025 2nd Round
Sunday, June 29th 2025
L Hiroki Takaoka
#376 Flyweight 		Submission (Rear-Naked Choke)
Round 2
  Rizin FF - Rizin 50
Sunday, March 30th 2025
W Takashi Matsuba
#464 Flyweight 		KO (Punches)
Round 1
  Deep - Osaka Impact 2024 4th Round
Sunday, December 22nd 2024
W Kengo Fujita
#403 Flyweight 		TKO (Punches)
Round 1
  Deep - Osaka Impact 2024 3rd Round
Sunday, September 22nd 2024
W Taiki Maeda TKO (Punches)
Round 1
  Deep - Osaka Impact 2024 2nd Round
Sunday, June 2nd 2024
W Terunari Inoue TKO (Punches)
Round 1
  Deep - Osaka Impact 2024 1st Round
Sunday, March 17th 2024
L Kanta Maruyama Submission (Rear-Naked Choke)
Round 1
  Deep - Osaka Impact 2023 3rd Round
Sunday, November 26th 2023
L Daiki Yahiro TKO (Punches)
Round 1
  Deep - Osaka Impact 2023 2nd Round
Sunday, July 30th 2023
  Opponent Event Outcome
L Taito Kubota
#671 Bantamweight 		  Deep Tokyo Impact 2026 4th Round
Sunday, September 6th 2026 		Submission (Twister)
Round 1
L Joe Hiramoto   Rizin FF - Rizin 53
Sunday, May 10th 2026 		Submission (Rear-Naked Choke)
Round 2
W Taichi Oizumi   DEEP Osaka Impact 2026 1st Round
Saturday, March 7th 2026 		TKO (Punches)
Round 1
NC Haruto Sunada   DEEP Osaka Impact 2025 5th Round
Saturday, December 6th 2025 		NC
Round 0
W Tomohiro Adaniya
#510 Bantamweight 		  Deep Osaka Impact 2025 2nd Round
Sunday, June 29th 2025 		TKO (Doctor Stoppage)
Round 1
L Hiroki Takaoka
#376 Flyweight 		  Rizin FF - Rizin 50
Sunday, March 30th 2025 		Submission (Rear-Naked Choke)
Round 2
W Takashi Matsuba
#464 Flyweight 		  Deep - Osaka Impact 2024 4th Round
Sunday, December 22nd 2024 		KO (Punches)
Round 1
W Kengo Fujita
#403 Flyweight 		  Deep - Osaka Impact 2024 3rd Round
Sunday, September 22nd 2024 		TKO (Punches)
Round 1
W Taiki Maeda   Deep - Osaka Impact 2024 2nd Round
Sunday, June 2nd 2024 		TKO (Punches)
Round 1
W Terunari Inoue   Deep - Osaka Impact 2024 1st Round
Sunday, March 17th 2024 		TKO (Punches)
Round 1
L Kanta Maruyama   Deep - Osaka Impact 2023 3rd Round
Sunday, November 26th 2023 		Submission (Rear-Naked Choke)
Round 1
L Daiki Yahiro   Deep - Osaka Impact 2023 2nd Round
Sunday, July 30th 2023 		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
10/01/2026 NR #1015 Bantamweight 6-5-0
18
07/01/2026 206 #484 Flyweight 6-4-0
21
04/01/2026 30 #278 Flyweight 6-3-0
30
01/01/2026 30 #308 Flyweight 5-3-0
28
10/01/2025 14 #278 Flyweight 5-3-0
30
07/01/2025 304 #264 Flyweight 5-3-0
30
04/01/2025 216 #568 Flyweight 4-3-0
19
01/01/2025 268 #352 Flyweight 4-2-0
25
10/01/2024 NR #620 Flyweight 3-2-0
18

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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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