Featherweight · Men

Jon Rosener

United States debut 2015
Held by Pat Grzywacz
Form W L L
Elo 975 peak 1,181 · 3 Oct 2015 206 below it
Tapology Sherdog
1-2pro record
2L current streak
1,026best win, Elo
1,132average opponent
-- born 11 Aug 1983
68.0" / -- height / reach

Elo history

Hover for the fight at that point; dots are wins and losses; the band is the typical prime for men at featherweight, ages 26–34

Record

-- – --
Rating by method KO895 Sub1,036 Dec985

Best wins

By the opponent's Elo on the night
  1. Grant Hartwig Submission R1 · 16 Sep 2022 · Shamrock Fighting Championships 1,017

Losses

Newest first
  1. Pat Grzywacz KO/TKO R1 · 17 Jan 2026 · Shamrock Fighting Championships 1,245
  2. Jason Powell KO/TKO R1 · 24 Jun 2023 · Nemesis Fighting Alliance 887

Fight history

7 bouts, newest first; amateur bouts are shaded. Hover a heading for what it means.
# Date Result Opponent Weight class Method Round Score Elo ± Opp Elo Odds Event
7 17 Jan 202642.4 yrs L1-2 Pat Grzywacz debut · 26.1 yrs Featherweight KO/TKOStrikes R11:16 0.00 1,011→975 -36 1,245 – Shamrock FC 372: St. Charles Shamrock Fighting Championships
6 24 Jun 202339.9 yrs L1-1 Jason Powell 0-5 · 45.4 yrs Featherweight KO/TKOStrikes R11:14 0.00 1,157→1,012 -144 887 – Nemesis Fighting Alliance - Nemesis 14 Nemesis Fighting Alliance
5 16 Sep 202239.1 yrs W1-0 Grant Hartwig 2-5 · 49.0 yrs Featherweight SubGuillotine Choke R14:43 1.00 1,087→1,157 +70 1,017 – Shamrock FC - Shamrock 340 Shamrock Fighting Championships
4 18 Jun 201632.9 yrs L2-2 Eric Ellington 10-1 · 27.8 yrs Bantamweighttitle KO/TKOKO/TKO R38:16 0.00 1,144→1,117 -26 1,384 – Fight Hard MMA Fight Hard MMA am
3 16 Apr 201632.7 yrs L2-1 Eric Ellington 8-1 · 27.6 yrs Bantamweighttitle KO/TKOStrikes R11:51 0.00 1,181→1,144 -37 1,344 – Prime FS 6: Knockout Prime Fight Series am
2 3 Oct 201532.1 yrs W2-0 Jonny Cox debut Featherweight SubArm Triangle Choke R11:58 1.00 1,136→1,181 +45 1,020 – Prime Fight Series 5: Breakout Prime Fight Series am
1 18 Apr 201531.7 yrs W1-0 Brandon Runyon 0-1 · 22.2 yrs Bantamweight SubArmbar R10:48 1.00 1,081→1,136 +55 1,026 – FHMMA - Fight Hard MMA Fight Hard MMA am