Maxemiliano VonRossum-Perez

UFC BJJ Open - Chicago Kickoff 2026-07-23

🥇 1st Youth Male GI / Youth 10-11 / Youth 75 / Grey · 🥇 1st Youth Male NOGI / Youth 10-11 / Advanced / Youth 85

Won vs Patton Gesner (Pride Jiu-Jitsu Academy)
Youth Male NOGI / Youth 10-11 / Advanced / Youth 85 · Round 2 · submission
Won vs Patton Gesner (Pride Jiu-Jitsu Academy)
Youth Male NOGI / Youth 10-11 / Advanced / Youth 85 · Round 1 · submission
Won vs Kareem Ali (M5BJJ)
Youth Male GI / Youth 10-11 / Youth 75 / Grey · Round 3 · submission
Won vs Marcelo Vazquez (Core Combat Sports Rockford)
Youth Male GI / Youth 10-11 / Youth 75 / Grey · Round 2 · submission
Won vs Omar Hamdan (M5BJJ)
Youth Male GI / Youth 10-11 / Youth 75 / Grey · Round 1 · submission

Grappling Industries GRAND RAPIDS 2026-06-06

🥇 1st Gi Kids / Grey / 10 - 11 years / -75 lbs · 🥈 2nd No Gi Kids / Intermediate (Grey) / 10 - 11 years / -75 lbs

Won vs Kylie Hoad (Academy 231)
No Gi Kids / Intermediate (Grey) / 10 - 11 years / -75 lbs · Round 5 · submission
Lost vs Liam FUNAY (Fighting Griffins)
No Gi Kids / Intermediate (Grey) / 10 - 11 years / -75 lbs · Round 4 · submission
Won vs Brandon SAWCHUK (Fighting Griffins)
No Gi Kids / Intermediate (Grey) / 10 - 11 years / -75 lbs · Round 3 · submission
Won vs Charley Double (Daniel Gracie Team Michigan)
No Gi Kids / Intermediate (Grey) / 10 - 11 years / -75 lbs · Round 1 · submission
Won vs Brandon SAWCHUK (Fighting Griffins)
Gi Kids / Grey / 10 - 11 years / -75 lbs · Round 4 · submission
Won vs Charley Double (Daniel Gracie Team Michigan)
Gi Kids / Grey / 10 - 11 years / -75 lbs · Round 3 · submission
Won vs Liam FUNAY (Fighting Griffins)
Gi Kids / Grey / 10 - 11 years / -75 lbs · Round 2 · points
Won vs Kylie Hoad (Academy 231)
Gi Kids / Grey / 10 - 11 years / -75 lbs · Round 1 · submission

Grappling Industries GRAND RAPIDS 2026-04-12

🥇 1st Gi Kids / Grey / 10 - 11 years / -75 lbs · 🥇 1st No Gi Kids / Intermediate (Grey) / 10 - 11 years / -75 lbs

Won vs Annabelle Hart (Black Lion Jiu Jitsu)
No Gi Kids / Intermediate (Grey) / 10 - 11 years / -75 lbs · Round 2 · submission
Won vs Kylie Hoad (Academy 231)
No Gi Kids / Intermediate (Grey) / 10 - 11 years / -75 lbs · Round 1 · points
Won vs Annabelle Hart (Black Lion Jiu Jitsu)
Gi Kids / Grey / 10 - 11 years / -75 lbs · Round 2 · submission
Won vs Kylie Hoad (Academy 231)
Gi Kids / Grey / 10 - 11 years / -75 lbs · Round 1 · submission

Grappling Industries CHICAGO 2026-04-11

Won vs Olivia Luebke (Valor Jiu-Jitsu)
No Gi Kids / Intermediate (Grey) / 10 - 11 years / -75 lbs · Round 5 · submission
Lost vs Alexander Pantoja (P3 Martial Arts)
No Gi Kids / Intermediate (Grey) / 10 - 11 years / -75 lbs · Round 3 · submission
Won vs Patrick Johnson (MBD Martial Arts Academy)
No Gi Kids / Intermediate (Grey) / 10 - 11 years / -75 lbs · Round 1 · submission
Lost vs Kal Germanovich (Ōkami BJJ)
No Gi Kids / Intermediate (Grey) / 10 - 11 years / -75 lbs · Round 1 · points
Lost vs Abigail Beltran (P3 Martial Arts)
Gi Kids / Grey / 10 - 11 years / -75 lbs · Round 4 · submission
Won vs Patrick Johnson (MBD Martial Arts Academy)
Gi Kids / Grey / 10 - 11 years / -75 lbs · Round 4 · submission
Won vs Olivia Luebke (Valor Jiu-Jitsu)
Gi Kids / Grey / 10 - 11 years / -75 lbs · Round 3 · points
Won vs Dominik Smith (Cho Jiu Jitsu Academy)
Gi Kids / Grey / 10 - 11 years / -75 lbs · Round 2 · points

Grappling Industries DETROIT 2026-01-10

🥉 3rd Gi Kids / Grey / 10 - 11 years / -75 lbs

Won vs Tasneem Fahey (Ronaldo Candido Academy Brazilian Jiu-Jitsu)
No Gi Kids / Intermediate (Grey) / 10 - 11 years / -75 lbs · Round 4 · points
Lost vs Yousif Younis (Blue devil jiu jitsu)
No Gi Kids / Intermediate (Grey) / 10 - 11 years / -75 lbs · Round 4 · points
Lost vs Ryan Lau (Immortal Martial Arts Center)
No Gi Kids / Intermediate (Grey) / 10 - 11 years / -75 lbs · Round 2 · points
Won vs Ali Sleiman (Detroit Jiu-Jitsu Syndicate)
No Gi Kids / Intermediate (Grey) / 10 - 11 years / -75 lbs · Round 1 · walkover
Lost vs Ryan Lau (Immortal Martial Arts Center)
Gi Kids / Grey / 10 - 11 years / -75 lbs · Round 4 · points
Won vs Kai Draper (Apex Jiu Jitsu Troy)
Gi Kids / Grey / 10 - 11 years / -75 lbs · Round 3 · submission
Won vs Tasneem Fahey (Ronaldo Candido Academy Brazilian Jiu-Jitsu)
Gi Kids / Grey / 10 - 11 years / -75 lbs · Round 2 · points
Won vs Gavin Walton (Fresh Brazilian Jiu Jitsu)
Gi Kids / Grey / 10 - 11 years / -75 lbs · Round 1 · submission

Grappling Industries GRAND RAPIDS 2025-12-13

🥈 2nd Gi Kids / Grey / 10 - 11 years / -85 lbs · 🥇 1st No Gi Kids / Intermediate (Grey) / 10 - 11 years / -85 lbs

Won vs Theo Dykstra (Carlson Gracie Team Grand Rapids)
No Gi Kids / Intermediate (Grey) / 10 - 11 years / -85 lbs · Round 4 · submission
Won vs Avett Bonofiglio (Lightning Kicks)
No Gi Kids / Intermediate (Grey) / 10 - 11 years / -85 lbs · Round 3 · submission
Won vs Natalie Marston (Deep Water Grappling and Striking House)
No Gi Kids / Intermediate (Grey) / 10 - 11 years / -85 lbs · Round 2 · submission
Won vs Ferris Markow (Unity Jiu Jitsu Grand Rapids)
No Gi Kids / Intermediate (Grey) / 10 - 11 years / -85 lbs · Round 1 · points
Won vs Donovin Depung (Academy 231)
Gi Kids / Grey / 10 - 11 years / -85 lbs · Round 5 · submission
Won vs Natalie Marston (Deep Water Grappling and Striking House)
Gi Kids / Grey / 10 - 11 years / -85 lbs · Round 2 · submission
Lost vs Ferris Markow (Unity Jiu Jitsu Grand Rapids)
Gi Kids / Grey / 10 - 11 years / -85 lbs · Round 3 · points
Won vs Avett Bonofiglio (Lightning Kicks)
Gi Kids / Grey / 10 - 11 years / -85 lbs · Round 1 · submission

Chewjitsu Open Frankenmuth 2025 2025-11-08

🥇 1st Gi / Grey / Coed Youth (9 - 12 years old) / C · 🥇 1st No Gi / Intermediate / Coed Youth (9 - 12 years old) / L

Won vs Lucy Hurst (Metro Jiu-Jitsu)
Gi / Grey / Coed Youth (9 - 12 years old) / C · Round 5 · submission
Won vs James Mellema (PSG)
Gi / Grey / Coed Youth (9 - 12 years old) / C · Round 4 · submission
Won vs Addison Gates (Good Vibez, Jiu-Jitsu and Fitness)
Gi / Grey / Coed Youth (9 - 12 years old) / C · Round 3 · submission
Won vs Tasneem Fahey (Ronaldo Candido Academy Brazilian Jiu-Jitsu)
Gi / Grey / Coed Youth (9 - 12 years old) / C · Round 1 · decision
Won vs Talliana Vallier (Flint Jiu Jitsu)
No Gi / Intermediate / Coed Youth (9 - 12 years old) / L · Round 5 · submission
Won vs Thaddeus Vallier (Flint Jiu Jitsu)
No Gi / Intermediate / Coed Youth (9 - 12 years old) / L · Round 2 · submission
Won vs Addison Gates (Good Vibez, Jiu-Jitsu and Fitness)
No Gi / Intermediate / Coed Youth (9 - 12 years old) / L · Round 4 · submission
Won vs James Mellema (PSG)
No Gi / Intermediate / Coed Youth (9 - 12 years old) / L · Round 1 · submission

Newbreed Grand Rapids Fall Championship 2025-10-25

🥉 3rd Youth 1- Gi / 10-11 years / Solid Grey or Grey w/black stripe (15yo and under) / NOT White Belt / Featherweight (76-85 lbs.) / 2 - 5 Years · 🥇 1st Youth 1- No-Gi / 10-11 years / Advanced / Featherweight (76-85 lbs.) / 6 Years and Over Advance

Won vs Tobias Foster (Island Jiu Jitsu Michigan)
Youth 1- Gi / 10-11 years / Solid Grey or Grey w/black stripe (15yo and under) / NOT White Belt / Featherweight (76-85 lbs.) / 2 - 5 Years · Round 1 · points
Lost vs Lachlan Kaczanowski (Island Jiu Jitsu Michigan)
Youth 1- Gi / 10-11 years / Solid Grey or Grey w/black stripe (15yo and under) / NOT White Belt / Featherweight (76-85 lbs.) / 2 - 5 Years · Round 1 · points
Won vs Tobias Foster (Island Jiu Jitsu Michigan)
Youth 1- No-Gi / 10-11 years / Advanced / Featherweight (76-85 lbs.) / 6 Years and Over Advance · Round 3 · submission
Lost vs Tobias Foster (Island Jiu Jitsu Michigan)
Youth 1- No-Gi / 10-11 years / Advanced / Featherweight (76-85 lbs.) / 6 Years and Over Advance · Round 2 · points
Won vs Tobias Foster (Island Jiu Jitsu Michigan)
Youth 1- No-Gi / 10-11 years / Advanced / Featherweight (76-85 lbs.) / 6 Years and Over Advance · Round 1 · submission

Grappling Industries DETROIT 2025-07-12

🥈 2nd Gi Kids / Grey / 8 - 9 years / -65 lbs · 🥇 1st No Gi Kids / Intermediate (Grey) / 8 - 9 years / -65 lbs

Won vs Mason Mahlock (PSG)
No Gi Kids / Intermediate (Grey) / 8 - 9 years / -65 lbs · Round 1 · submission
Lost vs Mason Mahlock (PSG)
Gi Kids / Grey / 8 - 9 years / -65 lbs · Round 1 · disqualification