Mike
(Michael Ostrowski)
| Michael Ostrowski VERIFIED | |
| Black belt Pending | |
| 17 year(s) and 6 month(s) of training | |
| Tempe, Arizona, United States of America | |
| Jay Pages Jiu-Jitsu Academy VERIFIED | |
| Caio Terra Association / BJJ Globetrotters | |
Lineage: Mitsuyo Maeda > Carlos Gracie > Carslon Gracie > Rodrigo Medeiros > Arthur Ruff > Gerson Atoigue > Mike Ostrowski
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Achievements
| Profile manually reviewed & certificate issued | |
| 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 Confirmed275/1000 vote points
60%
Wall
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 | Would recommend adding lineage in the designated field. Plus evidence from earlier belts as well. See https://www.beltchecker.c[...]amp;page=2 for some advice on what to add. 1 month(s) ago |
 | Thanks. I added lineage to the field. Unfortunately, I don't have any clear shots showing earlier belts. I have some group pictures, but most don't show my belt. On the brown belt, I added a comment refering to my presence on my former gym's website: https://rootsbjjaz.com/in[...]ructors-2/ 1 month(s) ago |
| No worries! I mostly check colored belts for the required time in BJJ before BB, which checks out. 2 day(s) ago |
Promotion history
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January 6, 2020 - Gilbert, AZ Roots BJJ
5 year(s) 11 month(s) 0 day(s)
Promoted by: Gerson Atoigue
I am no longer an instructor there, but as of Nov 3, 2025, the Roots website still shows me as a brown belt instructor at their gym: https://rootsbjjaz.com/in[...]ructors-2/
Stripe 2: October 14, 2022
December 13, 2014 - Mesa, AZ Ruffhouse Jiu Jitsu
5 year(s) 0 month(s) 24 day(s)
Promoted by: Arthur Ruff
June 1, 2008 - Tempe. AZ Rage in the Cage
4 year(s) 4 month(s) 5 day(s)
Votes received for current rank
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