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William Osborne

  William Osborne's profile at Sherdog 

William Osborne's profile at Tapology 

Birth Date: 1987-01-16
Association: N/A
Pro Debut Date: 2013-06-08
Pro Record: 6-5-0
Win Finish %: 83.3%
Quality Perf. %: 36.4%
Last Ranked: 10/01/2025

#1420 Featherweight

Highest Quarterly Ranking: 1/01/2014

#230 Bantamweight
Last Loss Date: 7/27/2024
Last Loss: [#675 FW] Nick Aguirre
Opponent's Last 5: L W W L W

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

  Opponent Outcome
L Nick Aguirre
#895 Bantamweight 		Submission (Rear-Naked Choke)
Round 1
  ACL 4 - Absolute Combat League 4
Saturday, July 27th 2024
W Andres Murray Submission (Rear-Naked Choke)
Round 2
  Ignite Fights - Iowa Fight Series 1
Saturday, October 21st 2023
W Steven Merrill
#880 Bantamweight 		TKO (Strikes)
Round 1
  AFC - Ascendancy Fighting Championship 51
Saturday, November 13th 2021
L Jessy Ebrecht Decision (Split)
Round 3
  Ascendancy FC 21
Saturday, March 7th 2020
W Adem Mujakic
#1206 Featherweight 		TKO (Strikes)
Round 1
  AFC - Ascendancy Fighting Championship 20
Saturday, December 21st 2019
L Emeka Ifekandu TKO (Punches)
Round 3
  Ascendancy FC 13
Friday, March 31st 2017
W Tony Crowder Submission (Rear Naked Choke)
Round 1
  WWFC - World War Fighting Championship 17
Saturday, January 17th 2015
L Justin Morrison
#683 Featherweight 		Submission (Armbar)
Round 2
  WWFC - World War Fighting Championships 14
Saturday, February 8th 2014
L Darrick Minner
#919 Lightweight 		Decision (Unanimous)
Round 3
  RFA 10 - Rhodes vs. Jouban
Friday, October 25th 2013
W Nate Williams
#26 Flyweight 		Decision (Unanimous)
Round 3
  WWFC - World War Fighting Championship 12
Saturday, July 13th 2013
W Eldis Sakanovic Submission (Rear Naked Choke)
Round 1
  WPCF - War Party Cage Fighting 28
Saturday, June 8th 2013
  Opponent Event Outcome
L Nick Aguirre
#895 Bantamweight 		  ACL 4 - Absolute Combat League 4
Saturday, July 27th 2024 		Submission (Rear-Naked Choke)
Round 1
W Andres Murray   Ignite Fights - Iowa Fight Series 1
Saturday, October 21st 2023 		Submission (Rear-Naked Choke)
Round 2
W Steven Merrill
#880 Bantamweight 		  AFC - Ascendancy Fighting Championship 51
Saturday, November 13th 2021 		TKO (Strikes)
Round 1
L Jessy Ebrecht   Ascendancy FC 21
Saturday, March 7th 2020 		Decision (Split)
Round 3
W Adem Mujakic
#1206 Featherweight 		  AFC - Ascendancy Fighting Championship 20
Saturday, December 21st 2019 		TKO (Strikes)
Round 1
L Emeka Ifekandu   Ascendancy FC 13
Friday, March 31st 2017 		TKO (Punches)
Round 3
W Tony Crowder   WWFC - World War Fighting Championship 17
Saturday, January 17th 2015 		Submission (Rear Naked Choke)
Round 1
L Justin Morrison
#683 Featherweight 		  WWFC - World War Fighting Championships 14
Saturday, February 8th 2014 		Submission (Armbar)
Round 2
L Darrick Minner
#919 Lightweight 		  RFA 10 - Rhodes vs. Jouban
Friday, October 25th 2013 		Decision (Unanimous)
Round 3
W Nate Williams
#26 Flyweight 		  WWFC - World War Fighting Championship 12
Saturday, July 13th 2013 		Decision (Unanimous)
Round 3
W Eldis Sakanovic   WPCF - War Party Cage Fighting 28
Saturday, June 8th 2013 		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
10/01/2025 18 #1420 Featherweight 6-5-0
16
07/01/2025 12 #1402 Featherweight 6-5-0
16
04/01/2025 15 #1390 Featherweight 6-5-0
16
01/01/2025 25 #1405 Featherweight 6-5-0
16
10/01/2024 NR #1380 Featherweight 6-5-0
16
07/01/2024 32 #1116 Lightweight 6-4-0
18
04/01/2024 40 #1084 Lightweight 6-4-0
18
01/01/2024 NR #1044 Lightweight 6-4-0
18
01/01/2023 44 #710 Featherweight 5-4-0
21
10/01/2022 35 #666 Featherweight 5-4-0
22
07/01/2022 21 #631 Featherweight 5-4-0
22
04/01/2022 31 #610 Featherweight 5-4-0
22
01/01/2022 NR #579 Featherweight 5-4-0
22
04/01/2021 88 #829 Lightweight 4-4-0
17
01/01/2021 NR #917 Lightweight 4-4-0
17
07/01/2020 63 #1042 Lightweight 4-4-0
17
04/01/2020 NR #1105 Lightweight 4-4-0
17
01/01/2020 NR #876 Featherweight 4-3-0
20
04/01/2016 71 #513 Bantamweight 3-2-0
20
01/01/2016 10 #442 Bantamweight 3-2-0
21
10/01/2015 22 #432 Bantamweight 3-2-0
21
07/01/2015 7 #410 Bantamweight 3-2-0
21
04/01/2015 21 #403 Bantamweight 3-2-0
21
01/01/2015 29 #382 Bantamweight 2-2-0
22
10/01/2014 13 #353 Bantamweight 2-2-0
22
07/01/2014 13 #340 Bantamweight 2-2-0
22
04/01/2014 97 #327 Bantamweight 2-2-0
22
01/01/2014 NR #230 Bantamweight 2-1-0
27
10/01/2013 NR #258 Featherweight 2-0-0
33


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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