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Coaches & Directors

We are here to support your needs. If your questions are related to workouts, meets, events, goal setting, and other swimming related needs, please contact one of the coaches. For all questions related to administrative, such as dues, safety, or policy issues, please contact one of the board members.

The Crimson Aquatics Swim Team consists of dedicated and experienced professionals. The team is a coach run and operated organization with all the coaches reporting to the Head Coach.

Coaching Staff

Peter T Zeiger

Head Coach

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Head Coach – Peter Zeiger.  Peter began his coaching career in 1981 as head coach of summer program while he was in college. He swam NCAA DI for four years, captained his college team and was part of a relay that had the team record for 30 years. Peter has coached athletes from the junior level and up to the national level. He is also the parent of 5 children all who have swam at the national level.

Grant Stephen Griffith

Senior Coach

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Grant has a BS in kinesiology and is about to finish his Masters in kinesiology with an emphasis on comparing swimming training methodologies.  Grant was the head coach at Odessa High (TX) the for 2 years and prior to that he was assistant coach at University of Texas of the Permian Basin for 2 years.  Grant had a great 4 year swimming career at University of Texas of the Permian Basin as captain and team record holder; He also achieved NCAA “B” cut standards as well. 

Carl G Cederquist

Senior Coach

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Cederquist has a degree in Physical Education from Northeastern University, with an emphasis in aquatics. Carl has more than 30 years of coaching experience where he has coached swimmers from the beginner level to the National and Olympic Trials level. His former swimmers hold many National Age Group records, New England records and Top Ten as well as Top 16 rankings. Carl received the New England Coach of the year in 2002, 2004 and 2008. Carl will coach the Senior practice groups.

Craig Adam Lewin

Senior 1 Coach

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Craig started his competitive swimming career at the late age of 13 with the JCC Piranhas.  From there he swam under Dan Warner with North Shore Swim Club.  He went on to swim at Boston College on the Varsity D1 Swim Team.  Through these experiences he developed a love of swimming both in the pool and open water.  He began to competitively swim in open water distance races between 8 miles and 25 kilometers. Craig was also a nationally ranked triathlete competing in the Ironman 70.3 World Championships.  Once Craig stopped personally competing, he began coaching for North Shore Swim Club.  In 2009, Craig started an adult swim team, Endurance Swimming, specializing in open water and triathlon swimming.  He has coached several triathletes of all levels from beginner to professional.  He has also coached two English Channel swimmers and was the pace swimmer for one of his athletes who crossed successfully.  While coaching, Craig noticed that many athletes struggle with proper head alignment.  To help athletes self-correct this inefficient position, he developed Head Strong Posture Trainer, now a fully patented product, available at Finis.  Along with his degree from Boston College, Craig also holds a B.S. in Sport Movement Science from Salem State College and a M.S. in Clinical Exercise Physiology from Northeastern University.  He has over 9 years of coaching experience and is a USA Swimming and an ASCA Level 2 Coach.

Jeanne Shea

Age Group/PreComp Coach

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Assistant Coach/Age Group and PreComp – Jeanne Shea has been teaching kids and adults of all levels the sport of swimming for over 10 years.  After working with the YMCA for 8 years, she left to expand her own business teaching private and group lessons.  Jeanne swam for Saint Michaels in college, is a level 1 certified coach, and has 5 children, 3 of whom currently swim for Crimson Aquatics.  

Blake E Zeiger

Junior Coach

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Assistant Coach/Age Group, Mini and FM – Blake Zeiger is a recent college graduate from the University of Minnesota where she had a strong swimming career.  She was a captain her senior year and part of the class that won 4 Big 10 Championships.  Also, during her time at Minnesota she qualified and attended NCAA’s and was part of 2 school record setting relays. Her US swimming career was as strong as her collegiate as she attended US Opens for 4 years, World Trial and Olympic Trials.  This past summer she was head coach the Sher-Le-Mon swim club.

Joshua Jackson

Strength and Conditioning Coach

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Josh oversees the strength and conditioning program for Crimson at RAPT.  He is a National Strength and Conditioning Association Certified Strength and Conditioning Specialist, a National Academy of Sport Medicine Certified Personal Trainer, and has a BS in Physical Education with a concentration in Exercise Science from Bridgewater State University. He also has experience with Olympic lifts and techniques as well as speed and agility training.  "One of my favorite fitness quotes is, “Any trainer can make you sweat, but not every trainer can make you better”. I have always been a hardworking and motivated individual ever since I was young and I want that to reflect on my attitude as a Strength Coach. My goal at RAPT is simple, to make everyone I work with improve from one day to the next in all aspects of strength, speed, and power; as well as in confidence. I am willing to do whatever it takes for you to reach your short and long term goals. I am approachable as a trainer and my aim is to make any individual feel confident and comfortable in a fitness setting."

Whitney L Zeiger

Age Group/PreComp

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Assistant Coach/Admin – Whitney Zeiger - She is currently an ASCA level 2 certified coach with a BS in Physical Education and an MBA .  She coaches AG1/AG2/PreComp.  Her responsiblities also include administration of the team.

Tom Ronan

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Tom Ronan Jr. is our new triathlon coach. He is Head Coach and Owner of MRA's Coaching and Training Division since 2014, a Science Teacher at Holy Name Central Catholic High School, and a U.S. Navy Search and Rescue Swimmer. He grew up in Philadelphia, got his Bachelor of Science in Biology from Umass, and studied post grad in Chemical and Life sciences at the University of Maryland. He has also been Head Varsity Cross Country and Assistant Varsity Track coach in Franklin and Grafton MA for over 12 years. He is a RRCA, USATF, HFSA, CSCS and USAT Certified Coach, and has coached dozens of Boston Qualifiers and IM finishers.