Stephen A. “Sid” Cassidy grew up swimming first for Kinston Swim Club & East Carolina Swim Association in the mid-1960's and by the late 60's his family moved to Delaware where he met his swimming and life mentor Bob Mattson. He flourished under the Hall of Fame coach and earned numerous awards representing Wilmington Aquatic Club before graduating from Salesianum School in 1974. He matriculated at North Carolina State University where he earned eight individual ACC Conference titles and was named NCAA D1 All-American.

Sid began his open-water swimming career in the mid-1970s as a member of the Ocean City Beach Patrol where he enjoyed a four-year undefeated streak in the Atlantic Ocean. He swam marathon races in the USA, Canada, and Egypt and in 1979 finished the year ranked as the #4 globally as a professional marathon swimmer. On September 1st of that same year, Sid began his full-time professional coaching career at his Delaware home club and quickly earned American Swim Coaches' highest accreditation as a Level V coach.

Sid first moved to Florida in 1983 and started working with collegiate athletes at the University of Tampa as an assistant coach from 1983 to 1985 while serving as the head coach of the Greater Tampa Swimming Association USA Swimming Club.

Sid began to serve USA Swimming as both a coach and administrator of open water swimming in 1983. In 1991 he accepted a position to serve as both coach and swimmer on a historic English Channel Relay that to this day still claims the title of fastest ever in three categories. From 1991 through 1996 Cassidy served as the National Team Head Coach of Open Water Swimming and often led USA’s top competitors to events worldwide.

In 1996 USA Swimming asked him to move into a political position as a member of FINA’s Technical Open Water Swimming Committee to further the goal of Olympic inclusion. In 2006 Cassidy was tapped as Chairman of the Committee and his leadership is viewed as instrumental in turning the Olympic Marathon dream into a reality. In the 2008 Beijing Olympic Games, the very first 10,000-meter Olympic Marathon Swim took place under the direction of FINA TOWSC Chairman Sid Cassidy and it received rave reviews from the swimmers, coaches, spectators, media, and most importantly, the IOC. Sid continues his duties with FINA and is currently serving in his second stint as TOWSC Chair looking toward the Paris and Los Angeles Olympic Games.

Sid was recognized by USA Swimming in 2009 with their most prestigious award and acknowledged  here .

In addition to all of his accolades and accomplishments in the open water swimming world, Cassidy has consistently coached teams and individuals to success at every level of swimming. More recently he has five times been named Florida High School Coach of the Year during his nearly two-decade run as the Head Coach and Aquatic Director at Saint Andrew’s School in Boca Raton.  Sid has coached many athletes at the National and Olympic levels and continues to do so presently.

Immediately before moving to Boca Raton, Sid spent seven years as Aquatic Director for the City of Atlantic City, New Jersey, and was the founding father of the Atlantic City Aquatic Club. A team the Cassidys created from scratch and in seven short years won the prestigious Middle Atlantic Junior Olympic Boys Team Title.

From 1993 – 1998 Cassidy was the Head Coach of the Men’s and Women’s Swimming and Diving teams at the University of Miami. During that time both squads enjoyed significant success. Cassidy’s men’s teams set a high-water mark for UM by capturing a Big East Conference Championship in 1995 and finishing in the top ten at the NCAA Division I Championships four consecutive years.

Cassidy also coached collegiately at James Madison University (Head Coach Men 1992-93) and Florida State University (Assistant Coach 1985-92). At JMU, he was named both ECAC and CAA coach of the year in 1993. During the seven seasons coaching at FSU, Sid coached his first national open water champion and worked with more than thirty All-American swimmers. He was named Recruiting Coordinator as the school enjoyed some of its finest aquatic achievements.  

Sid was married in 1992 to the former Kara Keenan, who is now the owner/operator of the  Florida Swim School  - our much-heralded and award-winning sister company. Kara and Sid have two children who are very involved as coaches in the family business and who both graduated from Saint Andrew's School, Quinn (’13) and Kate (’17).

Quinn returns to Saint Andrew's Aquatics after completing 4 years at University of Florida, where he also competed on their Varsity Swim Team.  Quinn has been a beach lifeguard in Ocean City, New Jersey the past 3 summers, where he represented the beach patrol in their swimming competitions  Quinn was also a finalist in the Red Bull Lifeguard Competition in Atlantic City.

Quinn was a member of the Zone swimming team from ages 8-14.  Quinn was the first member of the club at Saint Andrew's in 2005 and became one of the area's best swimmers in his age groups.  He graduated from Saint Andrew's School, where he began as a Varsity swimmer in grade 6.  Quinn was state champion in the 200IM and 100 Breast and a starter for the state champion Varsity Water Polo team earning All America status in both sports.

Quinn brings passion and knowledge for swimming and water to Saint Andrew's Aquatics and is excited to motivate the athletes as they excel in the pool.  He will be coaching the Gold group and assisting with Platinum.

Ramon is a Saint Andrew's School and Swimming alumnus.  As our Senior Team Associate Head Coach, he brings a wealth of experience to the pool deck.  He attended Saint Andrew's as a boarding student from Jamaica and graduated in 2009.  While at Saint Andrew's, he broke the school record in the 100 backstroke and racked up a few MVP awards for his contributions to the team.

Ramon represented the Jamaican National Team in many Caribbean and international meets breaking multiple national records.  In 2008, Ramon was selected as one of the two Junior Athletes to represent Jamaica at the Youth Olympic Games in Beijing, China.

A graduate of the University of Kentucky with a degree in Exercise Physiology, Ramon swam for the Wildcats for four years.  He broke two University of Kentucky records while competing at the SEC Swimming and Diving Championships.  In addition, he competed in both Summer and Winter Nationals.

Currently, Ramon is coaching the Platinum groups and assisting with the Gold group.  He is also the coordinator of the strength and conditioning program for the Senior group.

Kara Keenan Cassidy is a swimmer by marriage and completed her first swim race in 1999 in the Atlantic Ocean.

In 1998, the Atlantic City Aquatic Club began through Sid and Kara Cassidy, which continued competing until 2013.

In 1999 Kara founded the Seacats Swim School in New Jersey and has taught thousands of people of all ages how to swim and be safer in the water. In 2005, Kara was recognized by the Atlantic City Chamber of Commerce as “Top 40 Under 40” in Southern New Jersey for making a positive influence in the community.

2003 marked the inaugural 10K open water swim, which Kara and Sid organized as an International Professional Marathon Swim in Atlantic City, including raising over $30,000 in prize money.  This race was the blueprint for the Olympic Marathon Swim and was copied throughout the world in order to successfully put the event into the Olympics in 2008.

Kara has been a successful USA Swimming Coach since 2001, leading 10 & under boys to First Place finishes at Junior Olympics in 2005, 2006, and 11-12 boys in 2007. Kara was named as coach for Zone Team at Middle Atlantic Swimming in 2005 and 2006, as well as coach for All Star Team and Zone Team at Florida Gold Coast in 2007.  She is especially known for her keen attention to detail teaching stroke mechanics to all ages and has the ability to relate to those interested in learning to swim at any age. In 2005, Kara founded Saint Andrew’s Swim School, which is now Florida Swim School.  There is an additional location at a new, indoor, state-of-the-art facility.  Florida Swim School is nationally recognized as a premier learn-to-swim program for all ages. 

Kara is married to Sid Cassidy.  Their son Quinn returns to Saint Andrew's Aquatics as a coach from the University of Florida where he also continues his swimming career and daughter Kate is attending Arizona State University and competes.

Kathy is a native of Boca Raton and developed a passion for our sport while swimming for Duff Tyler at Saint Andrew’s Swim Club throughout the 1990’s.  She is a graduate of Boca Raton Community High School and has her Bachelors Degree in Education and her Master’s Degree in Exercise Science and Nutrition from Florida Atlantic University.  While at FAU, Kathy swam for the Division 1 Varsity Team and served a captain her senior year.  She is married to Saint Andrew’s Swimming alumni, All American and School Record Holder John Potts ('94) and they have 4 children together.  Since completing her competitive swimming career, Kathy has moved on to endurance distance events.  She has posted several top 10 age group finishes in Ironman 140.6 races, and qualified for the Boston Marathon multiple times.   

Kathy works with the Silver and Bronze groups with an emphasis on positive reinforcement for our younger swimmers. She enjoys sharing her love of swimming and sport to children in hopes to inspire a lifeling love of the BEST sport within them. 

Coach Marco brings years of experience coaching water polo:
      Deerfield Beach High School (2000-2005)
Served as an assistant coach alongside my brother, Edwin Barrera, who was the head coach. Contributed to team development while playing for the South Florida water polo open men team until my brother moved to California.
     Suncoast High School (2011-2023)
Head coach for 13 years, leading the team to an impressive record of undefeated district championships. Honored as Team of the Year and Coach of the Year by the Palm Beach Post in 2013-2014. Received a Congressional congratulatory letter from Alcee Hastings for outstanding contributions to the sport.
      North Palm Beach Water Polo (2012-2018)
Served as head coach, focusing on player development and promoting water polo within
the community.

Currently, Coach Marco is actively involved in coaching and growing the sport at the club level, fostering young talent and enhancing competitive opportunities in Florida.
With a rich history in both playing and coaching water polo, Coach Marco is dedicated to promoting the sport and nurturing the next generation of athletes.

Dani  grew up in South Florida and started her athletic career as a gymnast at the age of 4. By the time she was 11, she had her best gymnastics season yet, with many successes, which included
- 2012 Arizona Grand Invitational (Level 8) - 2nd Place on Vault and Bars, 1st Place on Beam and Floor, and 1st Place All Around
- 2012 Sun and Surf Spectacular (Level 8) - 1st Place on Vault and 1st Place All Around
- 2012 Florida Level 9-10 State Meet - Tied for 2nd on Floor and 11th Place All Around
- 2012 Region 8 Level 9, 10 Championship - 3rd on Floor and 10th Place All Around

In August of 2013,  Dani  transitioned from the sport of gymnastics to the sport of diving, following an injury that occurred after her 2012 gymnastics season. The transition from gymnastics to diving was fairly easy and  Dani  continued to dive until age 17. In those years, she qualified and competed at 3 AAU Diving National Championships, as well as competing at the 2015 AAU Red White and Blue National Championships, 3 State Championships and being awarded Female MVP in 2014 - 2016 for her high school Varsity Swim and Dive Team. Following the 2016 season,  Dani  stopped diving, but continued to coach her younger teammates until she went to college in the summer of 2018.

Dani  graduated from High Point University in High Point, North Carolina in December of 2021 and studied Sport Management, with hopes of working in Player and Athlete Development. Her goal was to work with young athletes and enhance their in-game/in-competition performances through sports training, strength and conditioning, nutrition, stretching, and recovery.  Dani  currently has her CrossFit Level 1 Certification, as well as her Nutrition Coach Certification, and is the Assistant Diving coach, and Assistant Dryland Conditioning coach for the Platinum Swimmers.

Maureen grew up in New Jersey and swam for Scarlet Aquatic Club in the 1990s. She is an accomplished swimmer qualifying for Zones, Junior Nationals, Senior Nationals, and Olympic Trials in breastroke eents.  She swam for Syracuse University, was team captian, and graduated in 2001.

She currently works at Boca Raton Regional Hospital as a Registered Nurse and is the Director of the Magnet Program.  Maureen lives in Boca Raton, is married to her husband Anthony, and has two daughters competing for Saint Andrew's, Rosie ('30) and Whitney ('33).

Riley Trout joined Saint Andrew’s Aquatics in Fall 2022, midway through her collegiate career at Florida Atlantic University. A backstroke and individual medley specialist, Riley set school records in the 100 and 200 backstroke and contributed to record-setting 200 and 400 medley relays. She earned a bronze medal in the 200 medley relay at the 2024 American Athletic Conference Championships.

A two-time AAC All-Academic honoree and C-USA Commissioner’s Honor Roll member, Riley excelled both in the pool and the classroom, graduating in 2025 with a B.A. in Elementary Education.

Originally from York, Pennsylvania, Riley was a USA Swimming Scholastic All-American and the 2021 National YMCA Festival Champion in the 200 backstroke. She spent eight years swimming for the York YMCA, where she discovered her passion for coaching by volunteering with younger swimmers.

Riley is now pursuing a master’s degree in Educational Psychology so she can better understand how children learn and stay motivated. She brings that knowledge directly to her work on the pool deck.

Lydia brings years of competitive swimming experience to Saint Andrew’s Aquatics—both as an athlete and now as a coach. A former Saint Andrew’s swimmer herself, she trained under some of the same coaches she now works alongside, giving her a strong connection to the program and a deep understanding of its values.

Lydia swam competitively at Florida Atlantic University and has received a degree in Communications with a minor in Studio Art.
She has a passion for technique, discipline, and helping young swimmers build confidence.  Lydia is excited to share her knowledge and give back to the team that helped shape her as an athlete.

Edward "Ted" Bresnahan coached 27 seasons of water polo at Johns Hopkins University prior to retiring in December 2018.

Bresnahan coached the Blue Jays for all but three of the program's varsity seasons. He took over as the program's fourth head coach in 1991 and turned Hopkins into one of the premier Division III water polo programs in the nation. Bresnahan led JHU to a 414-389 (.515) record, while competing primarily against Division I competition, and he became the fifth head coach in Johns Hopkins' athletics history to reach 400 wins.

Bresnahan coached 65 Association of Collegiate Water Polo Coaches (ACWPC) All-America selections, including 31 first team selections, a record five national Players of the Year and five College Sports Communicators (CSC) Academic All-America honorees.

JHU produced at least one All-America recipient in every season since 1996. In addition, two of his players have been inducted into the Johns Hopkins Athletic Hall of Fame. Bresnahan led the Blue Jays to a record 17 Collegiate Water Polo Association (CWPA) Division III Championships and six times Hopkins has been ranked number one in the nation in the season's final poll. He was named the ACWPC Division III National Coach of the Year in 2005, 2008 and 2015.

Arguably his greatest achievement was competing against Division I programs at a highly academic Division III team without the benefit of scholarships.  In 2015, he guided the Blue Jays to the title game of the CWPA Championship.  It marked the first and only time a Division III program has reached the title game of a Division I athletic conference in the history of modern intercollegiate athletics.  Bresnahan was recognized with the Dick Russell Coach of the Tournament award - the only Division III head coach to earn the accolade.

Bresnahan continues to give back to the sport as an official calling Florida High School, collegiate club and other competitions in the Sunshine State.

Eugene Zelikov is an experienced water polo coach with a strong foundation in Eastern European water polo, known for its disciplined and tactical style. With nearly a decade of coaching experience in the United States, he has successfully blended European techniques with American athleticism. Currently, he serves as the head coach for both the boys’ and girls’ Varsity Water Polo teams at Boca Raton High School, where he is recognized for developing a competitive, high-performing team.