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William Osborne

  William Osborne's profile at Sherdog 

William Osborne's profile at Tapology 

Rank State: Iowa
Age: 38
Last 5: W L W W L
Association: N/A
Pro Debut Date: 2013-06-08
Pro Record: 6-5-0
Current Ranking:
#1418 Featherweight
'Big League' Record: 0-1-0
Last 3 Years: 1-1-0
Win Finish %: 83.3%
Combat Age: 39
Quality Perf. %: 36.4%
Last Quality Perf.: 2021-11-13
540 Metric: .455
Rating Points: 16
Highest Quarterly Ranking: 1/01/2014

#237 Bantamweight

Last Fight Date: 7/27/2024 [Absolute Combat League]
Last Opponent: [#863 FW] Nick Aguirre
Opponent's Last 5: L L W W L

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

  Opponent Outcome
L Nick Aguirre
#923 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
#876 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
#1207 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
#682 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
#27 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
#923 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
#876 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
#1207 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
#682 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
#27 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 13 #1407 Featherweight 6-5-0
16
07/01/2025 2 #1394 Featherweight 6-5-0
16
04/01/2025 12 #1392 Featherweight 6-5-0
16
01/01/2025 25 #1404 Featherweight 6-5-0
16
10/01/2024 NR #1379 Featherweight 6-5-0
16
07/01/2024 36 #1156 Lightweight 6-4-0
18
04/01/2024 39 #1120 Lightweight 6-4-0
18
01/01/2024 NR #1081 Lightweight 6-4-0
18
01/01/2023 41 #703 Featherweight 5-4-0
21
10/01/2022 29 #662 Featherweight 5-4-0
22
07/01/2022 24 #633 Featherweight 5-4-0
22
04/01/2022 30 #609 Featherweight 5-4-0
22
01/01/2022 NR #579 Featherweight 5-4-0
22
04/01/2021 86 #827 Lightweight 4-4-0
16
01/01/2021 NR #913 Lightweight 4-4-0
17
07/01/2020 60 #1041 Lightweight 4-4-0
17
04/01/2020 NR #1101 Lightweight 4-4-0
17
01/01/2020 NR #876 Featherweight 4-3-0
20
04/01/2016 71 #520 Bantamweight 3-2-0
20
01/01/2016 11 #449 Bantamweight 3-2-0
21
10/01/2015 14 #438 Bantamweight 3-2-0
21
07/01/2015 48 #452 Bantamweight 3-2-0
20
04/01/2015 21 #404 Bantamweight 3-2-0
21
01/01/2015 28 #383 Bantamweight 2-2-0
22
10/01/2014 14 #355 Bantamweight 2-2-0
22
07/01/2014 11 #341 Bantamweight 2-2-0
22
04/01/2014 93 #330 Bantamweight 2-2-0
22
01/01/2014 NR #237 Bantamweight 2-1-0
26
10/01/2013 NR #263 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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