We believe in a diverse team bringing knowledge of the game, (professional) player and coaching experience at various levels.



Sam Graham 
Founder / Chairman

Marcia Graham   

Founder / Director of Operations

Meet Founder/ Head Coach, Sam Graham 

Sam is ex-professional Basketball Player and high performing Basketball Coach with over 30 years of experience in multiple aspects of coaching including player development, basketball operations, recruitment and evaluation of talent at all levels (Mens & Womens).

Sam has a proven track record of leading high performance Basketball Camps & Clinics in the USA and Europe for players within the  age groups 4 to 25.

Sam Graham was born in Barbados in 1967. In 1972, he and his mother migrated to New York City.  The move from a small tropical island to one of the biggest cities in the world was a difficult one.  It took awhile for him and his mother to acclimate to life in the city. Growing up, he was exposed to a lot of the negative elements of city life first-hand.  At a time when most kids are safely playing with each other, he was often confronted with the effects of drug abuse, violence, and other criminal behavior. His mother was working two jobs to keep a roof over their heads and food on the table.  This meant that she was not always there to steer him away from the negative factors surrounding them.

At the age of eight years old, Sam was invited to come along and participate in a game of basketball.  He was a tall kid with thick glasses and not much coordination. What he lacked in skill, he made up for in hustle.  Initially, he was never the first one picked to play and often found himself on the sideline watching and wanting to play.  The combination of watching his mother work so hard to provide for him and people telling him that he wasn’t good enough motivated him to prove them wrong.

Through hard work, Sam eventually made his first official basketball team.  He was the starting center for All Saints Catholic School in Harlem, New York City.  While developing as a basketball player, Sam was also receiving a lot of pressure from his mother to maintain a high academic standard.  Because of this, Sam was accepted at Cardinal Hayes High School in The Bronx, a prestigious private school for boys. With the dedication of his freshman coach, John Flame, Sam cemented himself as a top freshman player in the Catholic league.  Going into his second year of high school, Sam made the varsity team and quickly established himself as a defensive stopper.  

The coach of the team, Tom Murray Sr., served as a mentor, a father figure, and coach to Sam.  Coach Murray instilled in Sam the drive and motivation to want more out of himself. This was never more evident than when Sam’s mother passed away going into his senior year of high school when he really needed support both on and off the court.  Coach Murray was a source of hope during these dark times. He wouldn’t let Sam give up on life, reminding him of his mother’s expectations as an athlete and as a student. 

In 1985, Sam, after living by himself for his last year of high school, continued to excel on the court and in the classroom.  On the court, Sam was named by the Daily News sports writers as first team all-city, meaning he was one of the top five players in the senior class of New York City.  He was also named by Street and Smith magazine as an All American honorable mention. At the same time in the classroom, Sam was named scholar athlete of the year in the city.   

After his senior season, Sam decided to sign and play his collegiate career at St. Bonaventure University, Olean, New York.  At the university, Sam was named as the “Defensive Player of the Year” in three of the four years and was the “Most Improved Player” after his second season.  He also went on to earn his Bachelor’s Degree in Sociology from the university. After earning his degree at the university, Sam attended basketball tryouts for the CBA (Continental Basketball League) which was the development league for the NBA at the time.  Sam made the team, but received a better offer from a European team, which started Sam’s great European adventure.

During the course of his professional career in Europe, Sam played in England, Ireland, Iceland, France, and Germany.  Alongside playing professional basketball, Sam was also active in coaching youth teams and in basketball camps.  

From 1993 – 1998 Sam was Player/Head Coach at Reebok Hoop Camps in Germany.

In 1998 he established “Slammers” Basketball Organization with a partner. The organization consisted of three pillars: basketball camps, player agency, and basketball uniforms.  The basketball camps consisted of camps for kids and young adults (ages 6 to 21), Basketball Tour Organizer in the USA, and College / Professional Basketball Camps. The Players Agency (male and female) was responsible for placing 70 professional players that were under contract with the organization throughout Europe.  The services provided by the agency included player contract negotiations, player insurance, and accounting for the players. The organization also designed and produced basketball uniforms for clubs and private teams. 

In 2005 Sam ends cooperation with the company and retires as a Professional Basketball Player. 

During the years 2007 to 2013 Sam volunteers as a Basketball Consultant in Amsterdam, The Netherlands, helping small communities develop basketball programs, scouting young basketball talent introducing them to local basketball clubs,  prep-schools and universities in the United States.  

In 2013 Sam starts coaching the Men’s team at Basketball Club, Blue Stars in Diemen/Amsterdam also on a voluntary basis since he did not have a work permit in The Netherlands. 

In 2015 Sam decides to start his own Basketball Company in Amsterdam, Dynasty Sports B.V. organizing Basketball Camp & Clinics during the school holidays while he continues offering paid coaching services at Basketball Club Blue Stars and connected Basketballscool for younger children. 

End of Basketball season 2018, Sam decided to stop coaching at Blue Stars and held his final Basketball Camp in Spring 2019 under the name Dynasty Sports.

In 2019 Sam takes time off from coaching focusing on rebuilding Dynasty Sports and at the same time he starts exploring the need and interest amongst (young) players in Amsterdam to open up a new Basketball Club. 

Sam renames Dynasty Sports B.V. to DBX – Dynasty Basketball Experience and opens up his own International Basketball Club, DBX Wolves active as per February 2020. 

Sam is a success-driven and result-orientated Basketball coach with the goal building professional players and championships teams with character, integrity and sportsmanship. Sam is consistently motivating and inspiring players to bring the best to every practice and every game with a positive attitude.

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Meet Head Coach Ronny Weihmann 

Ronny was born in Merseburg, Germany and raised in Ramstein, Germany.

Ronny is a professional Basketball player with over 15 years of experience in Germany and the USA. Ronny has over 5 years experience as a personal / basketball skills trainer and performance coach.  

At age 19 Ronny received a basketball scholarship playing 4 years on the collegiate level in the US, while playing he was also pursuing his education earning a Bachelor degree in Sport Management. 

Ronny is also a certified Personal Trainer and has a Exos Speed Performance certified, his educational background also includes Physical education and Physical therapy.

Ronny started playing basketball at the age of 10; for the love of the game he dedicated his life to the game of Basketball. 

Ronny has an impressive basketball background, he played for 3 different Universities in the USA and played as a professional for various Pro-B teams in Germany until now, namely;

2003 – 2004 University of Dubuque

2004 – 2005 A2 German National Team

2005 – 2006 Tennessee State University

2006 – 2008 Emmanuel College Georgia

2008 USC Heidelberg

2008 – 2009 Big Gotha Rockets

2009 – 2010 BSW Sixers

2010 – 2011 USC Leipzig (League Champions)

2011 – 2012 Bramsche (League Top scorer)

2012 – 2013 Schwenningen Panthers (League Assist Leader)

2013 – 2015 1.FC Kaiserslautern (League champions, Cup Champions, MVP )

2015 – 2016 Saarlouis Royals

2016 – 2017 Bis Speyer

2017 – 2020 1.FC Kaiserslautern

In the Summer of 2007, Ronny managed and ran a 6-week summer program called Fit Factor for the Air Force youth center as an intern at McGuire Air Force Base NJ, USA. 

In 2014 Ronny founded his own Sports Academy; “Find A Way Athletics” in Germany working with young players from the US Military community. Ronny developed his own Basketball Development Program. 

Since 2016 Ronny has hosted 5 Basketball Camps in Germany with at least 30 players per Camp.

In 2018 Ronny was invited by Dynasty Sports as a Guest Skills Trainer with Head Coach Sam Graham.

In 2020 Ronny partners with DBX Camps & Clinics and joins Basketball Club, DBX WOLVES as the Head Coach of the U16/U18 and U20/U22 teams and up. 

Ronny is a passionate and dedicated coach who strives to help players to be the best they can be.  Ronny has helped many players and athletes achieve their goals and dreams of getting better at basketball or just simply getting in better shape with their body and mind. Ronny is an excellent leader and positive role model to all (young) players and professional Athletes on and of the court. 

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Clarisse was born and partially raised in Paramaribo, Suriname. At the age of 10, her and her family moved to Amsterdam, The Netherlands.

Clarisse has played the game of Basketball and has over 22 years of coaching experience. Clarisse is also a proud mother of a teenage daughter (15) who happens to be an amazing Basketball Player as well. 

Clarisse was introduced to the game of Basketball at the age of 11 joining a friend to Basketball practice. Playing the game, shooting hoops overwhelmed her with so much enthusiasm she got hooked to the game.

Clarisse joined Basketball Club, The Falcons in Amsterdam. The coaches recognized her talent fairly quickly and moved her onto a higher player level within the club. Clarisse became a successful player and joined various Basketball clubs after The Falcons, namely; Club2000, the Firebirdz and Brother and Sisters. Clarisse played all positions but mainly power forward. 

At the age of 16 and upon request of her coach, Clarisse started coaching young children in the age group 6 to 10 years old. Since then, Clarisse combined playing and coaching.

In 2016 Clarisse joined Basketball Club Gaasperdam Warriors and coached the U12 team. In addition, the year after Clarissa was appointed Head Coach of the “Basketballscool” connected to Gaasperdam Warriors.  

In 2016 Clarisse also joins Dynasty Sports Camps & Clinics and was appointed Head Coach coaching Basketball Programs developed by Sam Graham for the age groups 6  to 14 and 15 to 21 years old. 

In 2019 Clarisse decided to take time off from coaching to invest in personal time. 

In 2020 Clarissa returns to DBX Camps & Clinics and joins Basketball Club, DBX Wolves as the Head Coach of the Juniors, U10 and U12. 

Clarisse’s coaching style and approach is positive, inspiring, motivating and result-driven. 

She is in it to win it, on and off the court.       

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Meet ASSISTANT Coach Mario Tarin Araus 

Mario was born and partially raised in Spain, Valencia. At the age of 10 Mario moved to Amsterdam, The Netherlands. 

Mario is a true Streetballer and a genius at dribbling the ball. Mario has 2 years coaching experience and specializes in teaching and developing players’ ball handling and dribbling skills.

Mario started playing basketball at the age of 14. He is a self taught Basketball player, by watching players and basketball games at NBA level, gaining (technical) knowledge about the game of Basketball and various dribbling techniques. 

Mario’s height (5ft 7 / 1.70) played an important role being accepted as a basketball player amongst other players. However, Mario was determined and motivated to become the best streetball player in Amsterdam and on the court of Museumplein. Daily training, playing with and against other (streetball) players took Mario to an unexpected high level of basketball other players could no longer deny; “He’s got Next!”.

From the age of 17 to 19, Mario played for Basketball Club, Harlem Lakers in Amsterdam and combined playing with coaching younger children and young adults.

In 2018 Mario joins Dynasty Camps & Clinics and was appointed Assistant Coach / Dribble Coach, coaching Basketball Programs developed by Sam Graham for the age groups 6 to 14. In this period Mario has coached 3 Camps in Amsterdam and Almere.

In 2020 Mario returns to DBX Camps & Clinics and joins Basketball Club, DBX Wolves as the Assistant Coach of the Juniors, U10 and U12. 

Mario coaching approach is positive and challenging. He has the ability to bring the best out of (young) players by acknowledging strengths and weaknesses and work towards improvement and overall success. 

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Meet ASSISTANT Coach Michel Matheu aka “DICE” 

Michel was born in Rotterdam, the Netherlands and raised in Amsterdam, the Netherlands. His parents are originally from Curaçao. Michel is a proud father of a beautiful daughter (almost 7).

Michel’s nickname came about when he was 14 years old. His cousin saw him playing the game of Basketball and made the comment; “you are slicing and dicing the court! from now on I’m going to call you “DICE”!” and everyone followed…

Dice is a true Streetballer and has 2 years of coaching experience.

Dice started playing the game of Basketball at the age of 12 at his elementary school. 

For many years Dice continued playing on the Basketball court of the Nelson Mandelapark in Amsterdam South-East. 

In 2014 he joined Basketball Club, Club2000 and played there for one season. Dice played all positions, but mainly shooting guard.

In 2013 till 2015 Dice started coaching (young) children; he coached children in the age group 7 to 12 years old at different schools in Amsterdam South-East and at Basketball Cub, Club2000 he coached the U14 and U16 team. 

In 2019 Dice joined Dynasty Sports Camps & Clinics and was appointed as Assistant Coach coaching Basketball Programs developed by Sam Graham for the age group 6 to 12 years old.

Till now Dice continues to be a very active and talented Streetballer. You will find him playing on the court at Museumplein, Amsterdam on a regular basis no matter the Dutch weather (ok…storm and hail excluded!).

In 2020 Dice returns to DBX Camps & Clinics and joins Basketball Club, DBX Wolves as the Assistant Coach of the Juniors, U10 and U12.

Dice’s coaching style and approach comes from the heart. He positively inspires and motivates children to learn and get the best out of themselves, reaching their goals on and off the court. 

Dice lives and breath’s Basketball. 

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