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Aya Koyama

  Aya Koyama's profile at Sherdog 

Aya Koyama's profile at Tapology 

Association: N/A
Pro Debut Date: 2001-05-03
Pro Record: 4-10-1
Win Finish %: 100.0%
Quality Perf. %: 20.0%
Last Ranked: 7/01/2005

#4 Women Flyweight

Highest Quarterly Ranking: 4/01/2005

#2 Women Flyweight
Last Loss Date: 10/10/2010
Last Loss: [NR] Miki Morifuji

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

  Opponent Outcome
L Miki Morifuji
#11 Women Flyweight 		Submission (Rear Naked Choke)
Round 1
  Jewels - 10th Ring
Sunday, October 10th 2010
W Akiko Naito Submission (Armbar)
Round 2
  GCM - Cross Section 1
Sunday, April 18th 2004
W Aiko Oshino Submission (Armbar)
Round 2
  Deep 13 Impact
Thursday, January 22nd 2004
D Hiromi Takahashi Draw
Round 2
  AJWPW - Tag League: The Best
Friday, December 19th 2003
L Izumi Noguchi
#4 Women Flyweight 		Decision (Unanimous)
Round 2
  Smackgirl - Third Season 3
Wednesday, May 7th 2003
L Naoko Torashima
#5 Women Bantamweight 		Submission (Armbar)
Round 1
  Arkadia - Arkadia
Saturday, March 29th 2003
L Maiko Okada Submission (Heel Hook)
Round 1
  Smackgirl - Third Season 1
Monday, March 3rd 2003
W Hiromi Kanai Submission (Scarf Hold Armlock)
Round 2
  Smackgirl - Japan Cup 2002 Grand Final
Sunday, December 29th 2002
L Mari Kaneko Decision (Unanimous)
Round 3
  Smackgirl - Japan Cup 2002 Opening Round
Saturday, October 5th 2002
W Naomi Kawamata Submission (Armbar)
Round 1
  Smackgirl - Summer Gate 2002
Sunday, August 4th 2002
L Yoko Takahashi Submission (Guillotine Choke)
Round 1
  Zero1 - Impossible to Escape
Sunday, July 7th 2002
L Asako Saioka Decision (Unanimous)
Round 3
  Smackgirl - Golden Gate 2002
Monday, May 6th 2002
L Satoko Shinashi Submission (Armbar)
Round 1
  Ax - Vol. 2: We Want To Shine
Wednesday, December 26th 2001
L Yuuki Kondo Decision (Unanimous)
Round 3
  Smackgirl - Fighting Chance
Thursday, June 28th 2001
L Anna Kopyrina Technical Submission (Armbar)
Round 2
  ReMix - Golden Gate 2001
Thursday, May 3rd 2001
  Opponent Event Outcome
L Miki Morifuji
#11 Women Flyweight 		  Jewels - 10th Ring
Sunday, October 10th 2010 		Submission (Rear Naked Choke)
Round 1
W Akiko Naito   GCM - Cross Section 1
Sunday, April 18th 2004 		Submission (Armbar)
Round 2
W Aiko Oshino   Deep 13 Impact
Thursday, January 22nd 2004 		Submission (Armbar)
Round 2
D Hiromi Takahashi   AJWPW - Tag League: The Best
Friday, December 19th 2003 		Draw
Round 2
L Izumi Noguchi
#4 Women Flyweight 		  Smackgirl - Third Season 3
Wednesday, May 7th 2003 		Decision (Unanimous)
Round 2
L Naoko Torashima
#5 Women Bantamweight 		  Arkadia - Arkadia
Saturday, March 29th 2003 		Submission (Armbar)
Round 1
L Maiko Okada   Smackgirl - Third Season 1
Monday, March 3rd 2003 		Submission (Heel Hook)
Round 1
W Hiromi Kanai   Smackgirl - Japan Cup 2002 Grand Final
Sunday, December 29th 2002 		Submission (Scarf Hold Armlock)
Round 2
L Mari Kaneko   Smackgirl - Japan Cup 2002 Opening Round
Saturday, October 5th 2002 		Decision (Unanimous)
Round 3
W Naomi Kawamata   Smackgirl - Summer Gate 2002
Sunday, August 4th 2002 		Submission (Armbar)
Round 1
L Yoko Takahashi   Zero1 - Impossible to Escape
Sunday, July 7th 2002 		Submission (Guillotine Choke)
Round 1
L Asako Saioka   Smackgirl - Golden Gate 2002
Monday, May 6th 2002 		Decision (Unanimous)
Round 3
L Satoko Shinashi   Ax - Vol. 2: We Want To Shine
Wednesday, December 26th 2001 		Submission (Armbar)
Round 1
L Yuuki Kondo   Smackgirl - Fighting Chance
Thursday, June 28th 2001 		Decision (Unanimous)
Round 3
L Anna Kopyrina   ReMix - Golden Gate 2001
Thursday, May 3rd 2001 		Technical Submission (Armbar)
Round 2

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
07/01/2005 2 #4 Women Flyweight 4-9-1
17
04/01/2005 3 #2 Women Flyweight 4-9-1
18
01/01/2005 2 #5 Women Flyweight 4-9-1
18
10/01/2004 1 #3 Women Flyweight 4-9-1
18
07/01/2004 NR #4 Women Flyweight 4-9-1
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

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