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Yoshimasa Ishikawa

  Yoshimasa Ishikawa's profile at Sherdog 
Association: Shooting Gym Yokohama
Pro Debut Date: 1989-10-19
Pro Record: 4-5-0
Win Finish %: 50.0%
Quality Perf. %: 44.4%
Last Ranked: 4/01/1992

#4 Lightweight

Highest Quarterly Ranking: 1/01/1990

#1 Welterweight
Last Loss Date: 10/17/1991
Last Loss: [NR] Tomonori Ohara

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

  Opponent Outcome
W Tomonori Ohara
#3 Lightweight 		N/A
Round 3
  Shooto - Shooto
Friday, May 29th 1992
L Tomonori Ohara TKO (Broken Hand)
Round 2
  Shooto - Shooto
Thursday, October 17th 1991
W Yasuto Sekishima
#1 Welterweight 		Decision (Unanimous)
Round 5
  Shooto - Shooto
Saturday, August 3rd 1991
L Satoshi Honma Submission (Armbar)
Round 2
  Shooto - Shooto
Friday, May 31st 1991
W Tomonori Ohara
#1 Lightweight 		Submission (Guillotine Choke)
Round 4
  Shooto - Shooto
Friday, March 29th 1991
L Manabu Yamada TKO (Punches)
Round 1
  Shooto - Shooto
Saturday, September 8th 1990
L Yasuto Sekishima
#2 Welterweight 		Submission (Rear Naked Choke)
Round 1
  Shooto - Shooto
Saturday, May 12th 1990
L Yasuto Sekishima Submission (Kimura)
Round 1
  Shooto - Shooto
Saturday, January 13th 1990
  Opponent Event Outcome
W Tomonori Ohara
#3 Lightweight 		  Shooto - Shooto
Friday, May 29th 1992 		N/A
Round 3
L Tomonori Ohara   Shooto - Shooto
Thursday, October 17th 1991 		TKO (Broken Hand)
Round 2
W Yasuto Sekishima
#1 Welterweight 		  Shooto - Shooto
Saturday, August 3rd 1991 		Decision (Unanimous)
Round 5
L Satoshi Honma   Shooto - Shooto
Friday, May 31st 1991 		Submission (Armbar)
Round 2
W Tomonori Ohara
#1 Lightweight 		  Shooto - Shooto
Friday, March 29th 1991 		Submission (Guillotine Choke)
Round 4
L Manabu Yamada   Shooto - Shooto
Saturday, September 8th 1990 		TKO (Punches)
Round 1
L Yasuto Sekishima
#2 Welterweight 		  Shooto - Shooto
Saturday, May 12th 1990 		Submission (Rear Naked Choke)
Round 1
L Yasuto Sekishima   Shooto - Shooto
Saturday, January 13th 1990 		Submission (Kimura)
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
04/01/1992 1 #4 Lightweight 3-5-0
17
01/01/1992 NR #3 Lightweight 3-5-0
17
10/01/1991 NR #2 Welterweight 3-4-0
23
04/01/1991 NR #2 Lightweight 2-3-0
16
01/01/1990 NR #1 Welterweight 1-0-0
15


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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