Mario Silverback
(Mariusz Grzywinski)
| Mariusz Grzywinski VERIFIED | |
| Black belt 2nd degree VERIFIED | |
| 16 year(s) and 5 month(s) of training | |
| 1 competition matches (1-0-0) | |
8 medals (5 x  2 x  1 x  ) | |
| Dublin, Ireland | |
| Silverback jiu jitsu academy UNCLAIMED | |
| Lineage: Mitsuyo Maeda>Carlos Gracie Sr.>Helio Gracie>Carlos Gracie Jr.>Rigan Machado>Chris Haueter>Matt Thornton>John Kavanagh>Mariusz Grzywinski | |
| Facebook profile | |
| @Coach_mario_silverback | |
Lineage: Lineage: Mitsuyo Maeda>Carlos Gracie Sr.>Helio Gracie>Carlos Gracie Jr.>Rigan Machado>Chris Haueter>Matt Thornton>John Kavanagh>Mariusz Grzywinski
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Achievements
| Profile manually reviewed & certificate issued | |
| Current rank verified by promoting instructor | |
| Beltchecker.com pioneer (first 50) | |
| 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 |
Belt promotions
Luke
Bartosz
John
Black belt 2nd degree verification progress
Profile filled out Promotion history filled out Identity Confirmed 5855/1000 vote points
100%
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Gallery
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Promotion history
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September 30, 2023
2 year(s) 4 month(s) 2 day(s)
(Promotion by time served)
September 30, 2020
3 year(s) 0 month(s) 0 day(s)
(Promotion by time served)
September 30, 2017 - Dublin/Ireland/straight blast gym Ireland HQ
3 year(s) 0 month(s) 0 day(s)
Promoted by: John Kavanagh
August 25, 2015
2 year(s) 1 month(s) 5 day(s)
Promoted by: John Kavanagh
December 20, 2011
3 year(s) 8 month(s) 5 day(s)
Promoted by: John Kavanagh
September 30, 2010
1 year(s) 2 month(s) 20 day(s)
Promoted by: Matt Thornton
September 1, 2009
1 year(s) 0 month(s) 29 day(s)
Votes received for current rank
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Medals
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| Grappling industries Dublin 2019 | |
| Grappling industries Dublin 2019 | |
| DUBLIN INTERNATIONAL OPEN 2018 | |
| Irish open 2018 | |
| Madrid International Open Jiu-Jitsu IBJJF Championship | |
| Madrid International Open Jiu-Jitsu IBJJF Championship | |
| UAEBJJF WORLDS BJJ TRIALS 2015 Gi | |
| UAEBJJF WORLDS BJJ TRIALS 2015 Gi |
Competition record
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| Rory McCann | Win Calf slicer |
