Jeffrey Chapman
| Jeffrey Chapman VERIFIED | |
| Black belt VERIFIED | |
| 20 year(s) and 2 month(s) of training | |
| 26 competition matches (16-10-0) | |
17 medals (5 x  6 x  6 x  ) | |
| Norco, California, United States of America | |
| Sektor Jiu Jitsu Riverside UNCLAIMED | |
| Sektor Jiu Jitsu | |
| Website | |
| YouTube channel | |
| @jeff_jitsu_riverside | |
Lineage: Mitsuyo Maeda -> Carlos Gracie Sr. -> Rilion Gracie -> Claudio Arrias -> Gabriel Santos Costa -> Spencer Mendivil ->Jeffrey Chapman
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Achievements
| Profile manually reviewed & certificate issued | |
| Moderators Badge of Excellence | |
| Current rank verified by promoting instructor | |
| Name verified by credit card | |
| 10 verifications received | |
| 25 verifications received | |
| 50 verifications received | |
| Trained for 5 years | |
| Trained for 10 years | |
| Trained for 15 years | |
| Trained for 20 years | |
| Won 5 gold medals | |
| Won 10 gold medals | |
| Won 25 gold medals | |
| 10 competition matches | |
| 50 competition matches | |
| 100 competition matches | |
| 500 forum posts | |
| 1,000 forum posts |
Black belt verification progress
Profile filled out Promotion history filled out Identity Confirmed 1565/1000 vote points
100%
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Gallery
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2nd stripe on Purple March 2023
Lachlan Giles seminar
JJWL CA7 purple heavyweight masters 3
Nogi Worlds 2024 brown belt
Getting the bow and arrow at 2025 masters worlds
My professor wanted to give me a black belt, but decided to wait for his 2nd degree graduation in February. So, he jokingly gave me 5 stripes
My prof and his prof
Promotion history
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February 28, 2026 - Riverside, California
0 year(s) 0 month(s) 21 day(s)
Promoted by: Spencer Mendivil
May 16, 2024 - Corona, CA, USA
1 year(s) 9 month(s) 12 day(s)
Promoted by: Spencer Mendivil
Stripe 1: October 3, 2024
Stripe 2: September 20, 2025
Stripe 3: September 20, 2025
Stripe 4: September 20, 2025
Stripe 2: September 20, 2025
Stripe 3: September 20, 2025
Stripe 4: September 20, 2025
December 11, 2021 - Corona, CA, Sektor Jiu Jitsu
2 year(s) 5 month(s) 5 day(s)
Promoted by: Spencer Mendivil
Stripe 1: August 8, 2022
Stripe 2: March 13, 2023
Stripe 3: September 5, 2023
Stripe 4: February 3, 2024
Stripe 2: March 13, 2023
Stripe 3: September 5, 2023
Stripe 4: February 3, 2024
August 1, 2016 - Anaheim, CA, Mamute BJJ
5 year(s) 4 month(s) 10 day(s)
Promoted by: Bruno Paulista "Mamute"
Stripe 1: March 4, 2021
Stripe 2: August 26, 2021
Stripe 3: December 11, 2021
Stripe 2: August 26, 2021
Stripe 3: December 11, 2021
January 4, 2006 - Ralph Gracie Placentia
10 year(s) 6 month(s) 28 day(s)
Votes received for current rank
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Medals
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| JJWL California Championship II | |
| JJWL Pan Americans II |  |
| IBJJF International Masters North America |  |
| JJWL Worlds 2025 |  |
| IBJJF LA Open |  |
| IBJJF LA Open |  |
| IBJJF NoGi Worlds 2024 |  |
| IBJJF NoGi Pans 2024 |  |
| Grappling X Operation Grapple |  |
| Jiu Jitsu World League CA 8 |  |
| JJWL Worlds 2023 |  |
| JJWL Worlds 2023 | |
| IBJJF San Diego Open |  |
| JJWL |  |
| Jiu Jitsu World League California Open III | |
| Jiu Jitsu World League California Open | |
| Jiu Jitsu World League Orange County Championship |
Competition record
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| Samuel Cash | Loss Submission |
| Michael Weiner | Win Points 8-6 |
| Donald Snider | Win Points 2-0 |
| Ryan Hightower | Loss Points 0-2 |
| Adam Knoefler | Win Points 15-5 |
 | Win Points, 8-0 |
| Fernando Neres Dos Santos | Win Decision 0-0 |
| Ashley Meehan | Loss Points, 0-5 |
| Frank Selisker | Loss Points, 4-5 |
| Micha Brock | Win Points, 4-2 |
| George Sanchez | Win Sub, 17-0 |
| Selvin Mendez | Win Sub, 6-0 |
| Tai | Loss Points, 0-2 |
| Marcos Rivas | Win Sub, 9-0 |
| Ceasar Solario | Win Points |
| Michael Weiner | Loss Points |
| Michael Trupkin | Win Sub, 16-2 |
| Ernesto Fuentes | Win Points 2-0 |
| Andreilson Batista | Loss Points 0-2 |
| Andreilson Batista | Win Decision 0-0 |
| Andreilson Batista | Loss Decision 0-0 |
| Jason Balavram | Win Points 4-2 |
| Christopher Juarez | Loss Points- 0-5 |
| Jesse Cota | Win Decision 0-0 |
| Carlos Sanz | Win Sub 9-0 |
| Jayson Salazar | Loss Points 0-2 |
