Meet Our Academy Team

Position
Tennis Professional

William Camper is a High Performance Coach and  joined our team full time in 2024 after working part-time since 2020. As an RSPA Certified Elite Professional and iTPA Certified Fitness coach, William specializes in footwork, coordination, and serving, developing athletes from all levels through a technical approach. William’s coaching philosophy emphasizes precision, movement, and technique, with a particular focus on refining fundamentals to help players reach their full potential. Known for his expertise in doubles, he guides players in developing effective team strategies, communication, and synergy on the court.
A standout player in his own right, William played a pivotal role in Montgomery High School’s Tournament of Champions and Team State Championship titles in 2017 and 2018. He was crowned the New Jersey Individual State Doubles Champion in 2018 and earned Somerset County 1st Team All-State honors that same year. William continued playing tennis at the University of Richmond, where he served as the Club Tennis Captain from 2020 to 2022. Combining his competitive experience with his coaching expertise, William looks to develop individual player's technical skills and physical fitness to achieve on-court success. William has been involved with Nassau his entire life, and outside of the tennis club he is an avid fan of the Philadelphia Eagles, continuously looks to sharpen his cooking skills, and enjoys scuba diving.

Position
Tennis Professional 

Jeff Castera has been with Nassau Racquet and Tennis Club since 2021 and is a USPTR Certified Professional with extensive teaching experience since 2010 working with adults, juniors, and high-performance players. Having spent several years at Nassau Racquet and Tennis Club, he has developed a versatile coaching style that caters to players ranging from beginners to competitive athletes. Jeff’s coaching emphasizes point building, strategy, and mental toughness, focusing on personalized attention and goal-setting to help players develop a well-rounded game and boost their confidence on the court. Jeff's playing background includes a standout career at MCCC, where he achieved an impressive 37-5 season record in 2012. 

As an undergraduate, he earned 2nd Team Regional All-American honors and finished 4th nationally in singles. His competitive experience, paired with his coaching expertise, enables him to connect with students on both a technical and strategic level, providing valuable insights for players of all levels who are looking to improve or pursue competitive success. 

When Jeff is off the court, he can usually be found on the basketball court or in the gym.

Position
Tennis Professional

Justin Chong is a former student-athlete who has been instructing at Nassau since 2025. He played for the Old Bridge High School tennis team, where he contributed to the team’s success as a finalist in the Greater Middlesex County Tournament. A former NYU Varsity Tennis Team member, his dedication to the sport earned him a highest UTR of 10.6 and recognition as a 4-star recruit. Justin brings a wealth of experience and a deep understanding of competitive tennis to his coaching role.

Justin's academic background includes a Bachelor of Science in Business Administration with a finance concentration from the renowned NYU Stern School of Business. His education has equipped him with the skills and knowledge to excel in the business world, with a focus on finance. His competitive spirit and academic accomplishments continue to drive his pursuit of success in both sports and business.

When Justin is not on the court, he is either cycling or learning about up and coming tennis equipment. 

Position
Tennis Professional

Juan Hamdan has been with Nassau since 2018 and is a former professional tennis player from Mexico who has built a distinguished career coaching players of all levels in New Jersey. With decades of experience in the sport including; being D1 University of Nebraska player, ATP ranking points, ITF silver and gold medalist and current national USTA Player 40+ - Juan combines a deep understanding of tennis with a passion for mentoring and developing talent. Having competed at the highest levels, Juan brings invaluable insight into technique, strategy, and mental toughness, helping athletes reach their full potential. Today, Juan is known for a coaching style that emphasizes discipline, motivation, and personalized training, fostering both technical skills and a love for the game. 

When Juan isn't on the court he is often reading or traveling. 

Position
Tennis Professional

Marc Hill returns to Nassau as a Tennis Professional 2025 and brings over two decades of elite coaching experience to the court. Mentored by one of the top developmental and ATP/WTA coaches in the U.S., as well as the former Head of the ITF World Coaches' Commission, Marc has dedicated his professional life to the development of high-level junior players and the advancement of coaching excellence.

Throughout his career, Marc has successfully developed over 100 nationally ranked juniors, including 26 who reached Top 25 National rankings, 43 who achieved #1 sectional rankings, and 2 who broke into the ITF Top 20 worldwide. His deep commitment to player development extends nationally, serving as a Team USA National Faculty Coach and Lead Coach for USTA Sectional Camps. Additionally, Marc chairs the High Performance Coaches’ Commission for the USTA Middle States Section and actively collaborates with many of the country’s most respected coaching professionals. He is also a mentor to numerous high-performance development coaches across the nation. 

His coaching philosophy is centered around a disciplined, detail-oriented approach that emphasizes strong fundamentals, efficient movement, and intelligent, situational play. Through purposeful, high-volume repetition, players under Marc’s guidance learn to “execute the basics extremely well” while building the mental and physical foundation needed for long-term success.

As a player, Marc was ranked #1 in the USTA Middle States Section across four age divisions and went on to become a two-time All-American at The College of New Jersey. He later competed on the Pro Circuit, reaching an ITF Professional National Ranking of #168.

Marc also brings a strong academic and athletic performance background, holding a Bachelor’s Degree in Health and Sport Science with extensive study in Kinesiology and Biomechanics. He is a Certified Strength and Conditioning Specialist (CSCS) and holds additional certifications from the American College of Sports Medicine (ACSM) and the National Academy of Sports Medicine (NASM). He is also a certified K–12 Health and Physical Education teacher.

When Marc is off the court, he can usually be found spending time with family or enjoying nature. 

Position
Tennis Professional

Gabriel Knowles joined Nassau Racquet and Tennis Club in 2026 and brings a combination of Division I playing experience, high-performance coaching, and program leadership to our staff. Most recently he served as the Lead Pro across High Performance, Green, Orange, Red Ball, and Adult Programming at Legacy Youth Tennis & Education in Philadelphia. Gabriel has also served as a Team USA Coach for three consecutive years (2024, 2025, 2026), leading Junior Team USA training camps, and traveling with players to regional and national tournaments throughout the Mid-Atlantic.

Gabriel's coaching philosophy centers on long-term athlete development — pairing technical instruction with structure, accountability, and mentorship. At Legacy he managed the Excellence Program's practice structure, academic tracking, and individual player development systems, and he is the founder and former director of the Legacy College Pathway Team (LCPT), a program built to guide junior players through the college recruiting process. Prior to that, he spent nearly eight years as a Staff Professional at Northwood Racquet Club in Easton, PA.

A four-year NCAA Division I student-athlete at Howard University, Gabriel captained the Howard Men's Tennis team and competed on an athletic scholarship. He was a three-time ITA All-Academic Scholar Athlete (2021, 2023, 2024) a three-time Dean's List honoree, and he served as Co-President of Howard's Student-Athlete Advisory Committee. As the program's Community Outreach Administrator, he built partnerships with Washington, D.C. schools and organizations, organizing youth clinics, school visits, and service events.

Gabriel earned his B.A. in Political Science and African American Studies from Howard University in 2024, and also completed a legal internship with the City of Bethlehem. He speaks English and Swahili, and off the court he stays involved in youth mentorship and community programming.

Position
Tennis Professional 

Bruno Maguino has been part of the Nassau Racquet and Tennis Club coaching team since 2022. He brings a performance‑driven approach to every session, specializing in footwork, conditioning, and ball‑striking development for players of all ages and levels.

Bruno holds multiple industry‑recognized certifications, including, a PTR Level 2 Tennis Professional certification, and he is an iTPA certified Tennis Performance Trainer. His diverse training background allows him to blend technical instruction with athletic development, helping players build strong foundations while pushing their physical and mental growth on the court.

Known for his enthusiasm and upbeat coaching style, Bruno creates an engaging environment where athletes feel motivated, supported, and challenged. His sessions emphasize proper movement patterns, efficient mechanics, and confidence‑building, all while fostering a genuine love for the game.

Whether he’s working with competitive juniors or adult players looking to elevate their skills, Bruno brings passion, expertise, and an infectious energy that inspires athletes to reach their potential.

Off of the court Bruno enjoys cooking, playing board games, and trying new sports. 

Position
Tennis Professional 

Dylan Tsague has been with Nassau since 2024 and is a PTR Certified Professional. Dylan began his coaching career in New Jersey, where he served as a Tennis Coach and Hitting Partner at Advantage Tennis from 2016 to 2018. There, he worked collaboratively with a team of coaches to evaluate player skill levels, guide youth and adult clinics, and support athletes during practices and match play. 

From 2018 to 2019, Dylan joined Warren Racquet Club as a Tennis Professional. He played an integral role in designing and leading both individual and summer group training programs for more than 50 players between the ages of 5 and 17. 

Dylan’s most recent position was at Long Tennis Academy in San Jose, California, where he continued to expand his expertise from 2021 to 2023 as an Assistant Tennis Coach. There, he directed fun yet intensive training sessions focused on building endurance and consistency for high-performance juniors. He also supported recruiting efforts, co-coordinated the Under-10 developmental program, and contributed to fostering a highly focused, communicative, and enjoyable training environment for both players and staff. 

Known for his ability to connect with players of all ages and developmental stages, Dylan emphasizes fundamentals, athletic movement, and character growth—teaching young athletes not only how to compete but how to thrive. 

Academically, Dylan holds a Bachelor of Science in Electrical and Computer Engineering from Rutgers University–New Brunswick, a testament to his analytical thinking, problem-solving mindset, and commitment to personal excellence.

When Dylan is off the court, he likes to go Afro-Latino dancing.