"If you want to go fast, go alone. If you want to go far, go together." - African Proverb
New Jersey Instructors
Professor Diego Guadalupe
Owner & Head Jiu Jitsu Instructor
Diego Guadalupe was born and raised in Union City, NJ. Following his brother’s footsteps, he joined Fu Jow Pai (Tiger Claw System) Kung Fu under Sifu Paul Vizzio. He enjoyed the Kickboxing program most but felt his training was incomplete. After being introduced to Brazilian Jiu Jitsu in 2010, Diego found his passion. He began training soon enough and knew from the first class that this art catered to his need for self-defense, physical fitness, and technique.
Since then, he has trained with various instructors from Maryland, Chicago, California, and Saudi Arabia. He is a Brazilian Jiu Jitsu Black Belt under Professor Adem Redzovic. Diego is also a certified Mixed Martial Arts Conditioning Specialist (MMACS) with the National Academy of Sports Medicine (NASM).
Professor Diego holds a Bachelor's in Business Administration from Montclair University and is an entrepreneur who has dedicated his life to teaching and advocating the growth of Brazilian Jiu Jitsu in the Northern New Jersey area.
professor Omar Delgado
Head Jiu JItsu Instructor
Professor Omar Delgado is originally from the Bronx, NY. He has been training in Brazilian Jiu Jitsu since September 2011. Omar currently holds the rank of 1st Degree Black Belt under Professor Vitor “Shaolin” Ribeiro. A well-rounded martial artist, Omar has trained in several other arts but believes that Jiu Jitsu is the art he is most passionate about. He is an active competitor, a multiple-time IBJJF Open Champion, Abu Dhabi Jiu Jitsu Pro Champion, and a certified Black Belt with the International Brazilian Jiu Jitsu Federation (IBJJF). In addition to Jiu-Jitsu, Omar also trains Muay Thai under Kru Aaron Fisher.
Professionally, Omar is a Director of Operations for a global marketing and business communications company.
aLEX aU
Jiu Jitsu Instructor
Alexander Au was born in New York City and raised in Fort Lee, New Jersey. He is a Brazilian Jiu-Jitsu Brown Belt under Professor Kay Stephenson, with extensive training since 2013. He has also served as an Abu Dhabi Combat Club judge since 2023.
Alex instructs in both Brazilian Jiu-Jitsu and Muay Thai and has a strong interest in Judo and wrestling, continuously integrating these disciplines to explore their strengths and vulnerabilities. His passion for teaching not only deepens his own martial arts knowledge but is also driven by the progress and success of his students.
Additionally, Alex has pursued his academic studies in product and automotive design at Carnegie Mellon University and Coventry University in the UK. Professionally, Alex works in investment and day trade.
Fred Rosser
Jiu Jitsu Instructor
Fred Rosser was born and raised in the Bronx, NY. He was passionate about music and martial arts at a very early age. Anytime a Kung Fu or Karate movie came on television, Fred was watching. Years later, he would be fortunate to learn from many respectable instructors in various arts, including Karate, Kung Fu, Kick Boxing, Krav Maga, Sambo, Kali, and Judo. This experience began to shape his journey as a martial artist.
While training under 4th Degree USA Goju System Black Belt, Sensei Joe Ansah, Fred adopted the "Shin Ri Tan Kyu "philosophy, which means seeking the truth. The philosophy focuses on developing natural and effective self-defense responsiveness based on an individual's physical and mental qualities. This approach has carried over to his Brazilian Jiu Jitsu training, and he is currently a Brown Belt under Professor Diego. Fred is also the head instructor and coach of the kids' program.
Fred's passion for living life, fulfilling his purpose, and positively impacting others' lives continues to drive his self-development and inspire others to do the same.
maryland Instructors
professor Hernán Guadalupe
Owner & Head Jiu Jitsu Instructor
Dr. Hernán Guadalupe is a 1st-Degree Black Belt and the head instructor of Rollstar Maryland. He was born and raised in Union City, NJ. His passion for martial arts began when he was eight years old in Fu Jow Pai (Tiger Claw System) Kung Fu under 17X World Kickboxing Champion Sifu Paul Vizzio. He has trained in other martial arts styles, including American Kickboxing, Shotokan Karate, Tae Kwon Do, and Tang Soo Do.
After relocating to Maryland in 2009, Dr. Hernán wished to expand his martial arts knowledge and discovered Brazilian Jiu Jitsu. In 2020, Dr. Hernán was awarded his Brazilian Jiu Jitsu Black Belt by IBJJF NoGi World Champion Professor Ataide Rafael.
Dr. Hernán is a certified International Brazilian Jiu Jitsu Federation Black Belt (IBJJF, No. 145824). He is an engineer with a Master’s in Engineering and a Doctorate in Business Administration.
Professor Kym Sturdivant
Jiu Jitsu Instructor
Dr. Kym Sturdivant, a native of Springfield, MA, is a 1st-Degree Black Belt under Andre Monteiro of A-Force BJJ. Dr. Kym has been training in the art for the past 16 years. He is an avid competitor and was ranked number one in the world as a Blue and Purple Belt in his weight class. He is an IBJJF Masters Worlds, IBJJF Pan-American, and IBJJF NoGi Pan-American medalist, and an American (IBJJF), North American, Canadian, and European Nationals champion. Dr. Kym also serves as an ambassador for Tap Cancer Out, a non-profit organization that helps raise awareness and funding for cancer research.
Professionally, Dr. Kym holds a Ph.D. in psychology and is an educator currently serving as the Principal of Bard Early College High School DC in Washington, DC.
Professor manuel farfan arias
Jiu Jitsu Instructor
Professor Manuel Farfan Arias is a native of Lima, Peru, a Black Belt under Gonzalo Otero, and a representative of Movement Art. He is an active competitor currently ranked in the top 10 in the world at Gi light featherweight and Nogi featherweight under IBJJF. He is also a multiple-time IBJJF Open Champion and a Fight to Win vet. In addition to competing, Professor Manuel is passionate about teaching and sharing Jiu Jitsu with the world, actively coaching locally and internationally.
Professor Manuel merges his education in kinesiology and exercise science with his teaching methodology to maximize the learning and training process. He is also a certified personal trainer with the National Academy of Sports Medicine (NASM).
Professor Jamal Pender
Jiu Jitsu & Muay Thai Coach
Professor Jamal Pender is a lifelong martial artist with over 40 years of experience. He has obtained Black Belts in several arts, including Korean Tang Soo Do, Karate, and Japanese Jiu Jitsu.
Professor Jamal is an active practitioner of Budokon under the tutelage of Cameron Shayne and is one of the first Budokon Black Belts in the US. He is also a certified Muay Thai Kru under Ajarn Buck Grant, a Brazilian Jiu Jitsu Brown Belt under Professor Ataide Rafael, Judo Brown Belt, and a certified yoga, health, fitness, and movement coach.
He holds a bachelor’s from the University of Phoenix and is an organizing director for local unions.
Nafiz “Fiz” Mohammad
Jiu Jitsu Fundamentals Coach
Coach Nafiz began his martial arts journey as a child, training in Aiki-JiuJitsu under the guidance of Sensei Ali Shabazz. In 2012, he started training in Brazilian Jiu Jitsu under Professor Hernán. Although the first several years of balancing school and career took a toll on training, Nafiz rejoined Rollstar in 2022, energetic and committed to learning and training the art, earning his Blue Belt from Professor Hernán in 2023. Nafiz’s enthusiasm and determination led him to represent the academy in several local competitions, including becoming a 2023 PBJJF Pan-American silver medalist at Blue Belt.
Outside of Jiu Jitsu, Nafiz is a project manager and Agile professional. He enjoys lifting weights, playing video games, and spending quality time with friends and family. Coach Nafiz leads our weekly introductory classes and is dedicated to helping students begin their Jiu Jitsu journey.
Aleks Jaunzemis
Jiu Jitsu Fundamentals Coach
Coach Aleks has trained in martial arts since he was 13. In 2020, he started training in Brazilian Jiu Jitsu Rollstar and immediately fell in love with the art. He is currently a Blue Belt under Professor Hernán. A student of traditional Kung-Fu, Muay Thai, Judo, and a former wrestler in high school, Aleks' love for martial arts translates directly into his drive to get the best out of himself and his teammates. He currently leads the Wrestling Fundamentals class at Rollstar.
Aleks is a former Baltimore City high school teacher working for a non-profit educational scholarship organization. He holds a Bachelor's degree in Communication Sciences from Towson University and a Master's in Literacy/Special Education from John Hopkins University. He also enjoys hiking, competing in fighting game tournaments, or caring for his pet parrot.
sidique furet
Boxing Coach
Coach Sidique has trained in martial arts since he was 12. Brought up in Taekwondo, Muay Thai, and Karate, he found his passion in grappling, first training and competing in Jiu Jitsu at 14. In high school, he started wrestling, and after starting on JV, he became the 2015 Maryland State Champion. This is where he learned the value of perseverance and hard work when striving for a goal. He then transitioned to boxing, a lifelong passion for him, and competed as an amateur boxer. During that time, Sidique was the president of the Towson Boxing Club, leading a club of over 50 members. He is a NASM-certified personal trainer, ACE Fitness group fitness instructor, and a USA Boxing bronze-level certified coach. Passionately dedicated to coaching, he seeks to pass on wisdom and empower those on the learning journey.
Sidique holds a Bachelor’s in Exercise Science from Towson University and is the Assistant Manager at the FDA fitness center. He enjoys lifting weights, traveling, and watching MMA with friends and family.
Visiting instructors
Professor Adem redzovic
Visiting Instructor
Professor Adem Redzovic is a 4th-degree Brazilian Jiu-Jitsu Black Belt under the legendary Gracie family and is the founder of the Downtown Jiu-Jitsu Club in Chicago, IL. One of the first American Black Belts under Master Carlos Gracie Jr in Chicago, Adem is recognized for his technical expertise and dedication to teaching Brazilian Jiu Jitsu to students of all levels, focusing on self-defense, fitness, and personal growth.
Known for fostering a positive and inclusive learning environment, Adem emphasizes the mental and philosophical aspects of the Gentle Art. His academy is highly respected in the Midwest, and he regularly hosts seminars and workshops to share his knowledge and passion for the art.
Professor Luis “AP” Gil
Visiting Instructor
Professor Luis “AP” Gil is originally from Manhattan, NY, and is a lifelong martial artist. Professor Luis holds ranks in several arts, including a 2nd-Degree Brazilian Jiu Jitsu Black Belt under Luiz "Manxinha" Riberio, an ITF Taekwondo 4th Degree Black Belt under Ramon Mateo, and a WTF taekwondo 1st Degree Black Belt under Mateo Maldonado. He is also a Muay Thai practitioner.
Luis is also an accomplished competitor, having won several major BJJ competitions. His accolades include IBJJF No-Gi Pan-American Champion, IBJJF Europeans Champion, IBJJF British National Champion, and multiple-time IBJJF Open Champion. Professor Luis is also a certified Black Belt with the International Brazilian Jiu Jitsu Federation (IBJJF).