Callen Oster
45 matches · 30 won · 15 lost · 0 with video
Grappling Industries CLEVELAND 2026-09-26
🥈 2nd No Gi Adult / Male / Intermediate (Blue) / Adult / -170 lbs · 🥇 1st Gi Adult / Male / Blue / Adult / -170 lbs
-
Won
vs Ali A Abdishakur
(Ronin Training Center/ GFT-Ohio)
No Gi Adult / Male / Intermediate (Blue) / Adult / -170 lbs · Round 4 · submission
-
Lost
vs Forrest “Burrito Supreme” Ramage
(Strong Style MMA/Effective Jiu-Jitsu)
No Gi Adult / Male / Intermediate (Blue) / Adult / -170 lbs · Round 4 · points
-
Won
vs James Robinson
(Ohio Combat Sports Academy)
No Gi Adult / Male / Intermediate (Blue) / Adult / -170 lbs · Round 2 · points
-
Won
vs Javan Starkey
(Powers Martial Arts Academy)
No Gi Adult / Male / Intermediate (Blue) / Adult / -170 lbs · Round 1 · submission
-
Won
vs James Robinson
(Ohio Combat Sports Academy)
Gi Adult / Male / Blue / Adult / -170 lbs · Round 5 · submission
-
Won
vs Ali A Abdishakur
(Ronin Training Center/ GFT-Ohio)
Gi Adult / Male / Blue / Adult / -170 lbs · Round 3 · points
-
Won
vs Javan Starkey
(Powers Martial Arts Academy)
Gi Adult / Male / Blue / Adult / -170 lbs · Round 3 · submission
-
Won
vs Forrest “Burrito Supreme” Ramage
(Strong Style MMA/Effective Jiu-Jitsu)
Gi Adult / Male / Blue / Adult / -170 lbs · Round 1 · submission
2026 Buckeye State Grappling Championship 2026-07-11
🥉 3rd Male Gi / Blue / Master 1 (30+) / -168,00 lbs (Light)
-
Won
vs Marcus Everett
(Ohio Brasa)
Male Gi / Blue / Master 1 (30+) / -168,00 lbs (Light) · Round 2 · points
-
Lost
vs David Wise
(Iron & Soul)
Male Gi / Blue / Master 1 (30+) / -168,00 lbs (Light) · Round 1 · points
Grappling Industries PITTSBURGH 2026-06-27
🥇 1st Gi Adult / Male / Blue / Adult / -170 lbs · 🥇 1st No Gi Adult / Male / Intermediate (Blue) / Adult / -170 lbs
-
Won
vs Zane Reed
(Waterfront MMA)
No Gi Adult / Male / Intermediate (Blue) / Adult / -170 lbs · Round 3 · submission
-
Won
vs Dacoda Randall
(Campbell Martial Arts)
No Gi Adult / Male / Intermediate (Blue) / Adult / -170 lbs · Round 2 · walkover
-
Won
vs Porter Calcek
(Octane Martial Arts)
Gi Adult / Male / Blue / Adult / -170 lbs · Round 3 · submission
-
Won
vs Zane Reed
(Waterfront MMA)
Gi Adult / Male / Blue / Adult / -170 lbs · Round 2 · submission
Grappling Industries CLEVELAND 2026-06-21
🥇 1st Gi Adult / Male / Blue / Master (30+) / -170 lbs · 🥈 2nd No Gi Adult / Male / Intermediate (Blue) / Adult / -170 lbs
-
Lost
vs Epifanio Peterson
(Academy 440 Jiu-jitsu & Fitness)
No Gi Adult / Male / Intermediate (Blue) / Adult / -170 lbs · Round 2 · points
-
Lost
vs Epifanio Peterson
(Academy 440 Jiu-jitsu & Fitness)
No Gi Adult / Male / Intermediate (Blue) / Adult / -170 lbs · Round 1 · submission
-
Won
vs Robert Xu
(Hurricane Jiu Jitsu (Cleveland))
Gi Adult / Male / Blue / Master (30+) / -170 lbs · Round 3 · points
-
Won
vs Robert Xu
(Hurricane Jiu Jitsu (Cleveland))
Gi Adult / Male / Blue / Master (30+) / -170 lbs · Round 2 · submission
-
Lost
vs Robert Xu
(Hurricane Jiu Jitsu (Cleveland))
Gi Adult / Male / Blue / Master (30+) / -170 lbs · Round 1 · points
Grappling Industries CLEVELAND 2025-12-20
🥈 2nd Gi Adult / Male / Blue / Adult / -170 lbs
-
Won
vs David Wise
(Iron & Soul)
Gi Adult / Male / Blue / Adult / -170 lbs · Round 3 · submission
-
Won
vs Joshua Stahl
(Team Kriebel Ohio Brazilian Jiu Jitsu Academy)
Gi Adult / Male / Blue / Adult / -170 lbs · Round 2 · submission
-
Won
vs Vince Nerone
(Relson Gracie Cleveland)
Gi Adult / Male / Blue / Adult / -170 lbs · Round 2 · submission
-
Lost
vs David Arakelyan
(Ararat Martial Arts)
Gi Adult / Male / Blue / Adult / -170 lbs · Round 1 · points
Grappling Industries COLUMBUS 2025-09-06
🥇 1st Gi Adult / Male / Blue / Master (30+) / -170 lbs · 🥉 3rd No Gi Adult / Male / Intermediate (Blue) / Master (30+) / -170 lbs
-
Lost
vs Mark Linton
(10th Planet - Newark)
No Gi Adult / Male / Intermediate (Blue) / Master (30+) / -170 lbs · Round 2 · submission
-
Lost
vs Alex Waterman
(10th Planet Columbus)
No Gi Adult / Male / Intermediate (Blue) / Master (30+) / -170 lbs · Round 1 · points
-
Won
vs Jesse Bates
(Ronin Training Center/ GFT-Ohio)
Gi Adult / Male / Blue / Master (30+) / -170 lbs · Round 3 · submission
-
Won
vs Rodney Grim
(Ronin Training Center/ GFT-Ohio)
Gi Adult / Male / Blue / Master (30+) / -170 lbs · Round 1 · submission
Grappling Industries CLEVELAND 2025-08-16
🥇 1st Gi Adult / Male / Blue / Master (30+) / -185 lbs · 🥇 1st No Gi Adult / Male / Intermediate (Blue) / Master (30+) / -185 lbs
-
Lost
vs Pedro Sanchez
(36 Chambers Jiu-Jitsu Academy)
No Gi Adult / Male / Intermediate (Blue) / Master (30+) / -185 lbs · Round 2 · points
-
Won
vs Glen Hayes
(Team East Coast BJJ/Team James Clingerman)
No Gi Adult / Male / Intermediate (Blue) / Master (30+) / -185 lbs · Round 1 · submission
-
Won
vs Pedro Sanchez
(36 Chambers Jiu-Jitsu Academy)
Gi Adult / Male / Blue / Master (30+) / -185 lbs · Round 3 · submission
-
Won
vs Glen Hayes
(Team East Coast BJJ/Team James Clingerman)
Gi Adult / Male / Blue / Master (30+) / -185 lbs · Round 2 · submission
NAGA Cleveland Grappling Championship 2025-07-19
🥇 1st Men No-Gi / Intermediate / 160 - 169.9 (Welter Weight) / Master (30+) · 🥇 1st Men Gi / Blue / 160 - 169.9 (Welter Weight) / Master (30+)
-
Won
vs Brandon Benic
(Elevated BJJ)
Men Gi / Blue / 160 - 169.9 (Welter Weight) / Master (30+) · Round 3 · points
-
Lost
vs Brandon Benic
(Elevated BJJ)
Men Gi / Blue / 160 - 169.9 (Welter Weight) / Master (30+) · Round 2 · points
-
Won
vs Brandon Benic
(Elevated BJJ)
Men Gi / Blue / 160 - 169.9 (Welter Weight) / Master (30+) · Round 1 · submission
-
Won
vs Brandon Benic
(Elevated BJJ)
Men No-Gi / Intermediate / 160 - 169.9 (Welter Weight) / Master (30+) · Round 3 · submission
-
Lost
vs Brandon Benic
(Elevated BJJ)
Men No-Gi / Intermediate / 160 - 169.9 (Welter Weight) / Master (30+) · Round 2 · points
-
Won
vs Brandon Benic
(Elevated BJJ)
Men No-Gi / Intermediate / 160 - 169.9 (Welter Weight) / Master (30+) · Round 1 · points
2025 Buckeye State Grappling Championship - Gi 2025-06-28
🥉 3rd Male Gi / Blue / Master 1 (30+) / -168,00 lbs (Light)
-
Won
vs Hiroki Kato
(Jits56)
Male Gi / Blue / Master 1 (30+) / -168,00 lbs (Light) · Round 3 · submission
-
Won
vs Juan Morales
(Iron and Soul Jujitsu)
Male Gi / Blue / Master 1 (30+) / -168,00 lbs (Light) · Round 2 · points
-
Lost
vs Hiroki Kato
(Jits56)
Male Gi / Blue / Master 1 (30+) / -168,00 lbs (Light) · Round 1 · points
Grappling Industries COLUMBUS 2025-06-14
🥈 2nd Gi Adult / Male / Blue / Master (30+) / -185 lbs
-
Lost
vs Ryan Burrey
(SG Brazilian Jiu-Jitsu / Adamas Jiu Jitsu)
Gi Adult / Male / Blue / Master (30+) / -185 lbs · Round 2 · points
-
Lost
vs Ryan Burrey
(SG Brazilian Jiu-Jitsu / Adamas Jiu Jitsu)
Gi Adult / Male / Blue / Master (30+) / -185 lbs · Round 1 · submission
Grappling Industries CLEVELAND 2025-03-29
🥈 2nd No Gi Adult / Male / Intermediate (Blue) / Master (30+) / -170 lbs
-
Lost
vs Branden Crawford-Shields
(Sonic Jiu-Jitsu)
No Gi Adult / Male / Intermediate (Blue) / Master (30+) / -170 lbs · Round 3 · decision
-
Won
vs Bryan Artiles
(10th Planet Masury)
No Gi Adult / Male / Intermediate (Blue) / Master (30+) / -170 lbs · Round 2 · points
-
Won
vs Josh Coleman
(Total Revolution Training Facility)
No Gi Adult / Male / Intermediate (Blue) / Master (30+) / -170 lbs · Round 1 · submission
Teams
- Kent Jiu Jitsu 21 events, last 2026-09-26
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