Potomac Valley Swimming

Tryouts for the 2024-2025 Season! Interested? Click HERE for more info and to sign up!


Henry Tollefson, Head Coach, LI - Henry has been coaching for over 10 years and the past seven for TOLL. He's a lifelong competitive swimmer and began coaching summer swimming in MCSL while still in high school. He can also be found in the summers coaching the CCRA Stingrays. Henry has a passion for inspiring swimmers to be the best possible athletes they can be through commitment and motivation. He strongly believes in technical feedback and helping swimmers grow throughout each season. In L1, he will focus on advanced skill development in underwaters, IM, and training for longer events. There is a focus on qualifying for top-level competitions such as Junior Champs, IMX, ISCA, and Zones. Besides coaching, Henry enjoys reading, exercising, and playing with his cat, Oreo.
Andrew Tollefson, T Group - This is Andrew's ninth year coaching for TOLL, and his sixth year heading up T Group. As a lifelong swimmer, Andrew made it all the way to the Junior Olympic level and had a collegiate career swimming for NC State (Go Wolfpack!). For the past seven summers he's also had head coaching duties for MCSL and CCSDA. In T Group, Andrew will focus on getting his swimmers to qualify for sectional, Junior National and National level meets and ensuring they are prepared for success inside and outside the pool. He believes Tollefson swimmers are capable of achieving anything they set their minds to provided they are eager to learn new methods and adaptive, efficient swimming technique. Every swimmer is different and will need different training styles, which is why building relationships within the group helps tailor coaching styles for maximum growth. Andrew can also be found enjoying coffee, traveling, reading, staying active, and teaching 8th grade history in MCPS. Remember, "You miss 100% of the shots you don't take."
Elizabeth Sudassy, L2, Senior Development - Elizabeth has been with Tollefson Swimming since 2003 teaching stroke classes and training and endurance, and she began working with Team TOLL the year it all began in 2010. Overall she has more than 25 years of coaching and teaching experience in the pool. Elizabeth is also a lifelong swimmer, growing up competing in MCSL, swimming in high school and all 4 years of college at Loyola University. Using her own passion for swimming, she hopes to inspire swimmers to work consistently and patiently on their technique. She is known for incorporating silly swims as a way to reward swimmers after a challenging set. Besides coaching, Elizabeth enjoys swimming, nature hikes, yoga and meditation. She finally got up the nerve to do Swing Dance lessons. After all that grooving, Elizabeth does enjoy a nice chocolate or fresh homemade baked goods.
Gigi Gigliotti - Junior2, Minis, Manager for stroke, in-water, and T&E - This is Gigi's second official year with Tollefson as a coach. She was born and raised in Rio de Janeiro, Brazil and has been a competitive swimmer since she was 10 years old. Gigi was also a member of  the  Brazilian Swim national team and represented Brazil in both national and international competitions. A full scholarship to the University of Utah brought Gigi to the US where she excelled as a swimmer, improving times and qualifying for NCAA D1 meets. In additional to teaching her swimmers to master the basics and proper technique, especially water safety for in-water classes, Gigi brings a desire to teach proper breathing - it's not just about taking air in and out of the lungs, it's a complex, intelligent process that gives an advantage to swimmers, and makes them perform better in and out of water. Gigi is currently spending her second summer as head coach of the Kenmont Tsunamis. Aside from coaching, she enjoys exercising, traveling and dancing. 
Roger Dent - AGD Coach, T&E, stroke instructor - Roger is in his second year as a coach for Tollefson Swimming. He's been swimming competitively since he was 7 and was eventually recruited to swim Butterfly, Breast, and IM at the University of Maryland. From there he's competed at multiple national and international meets including Olympic Trials in 2012. He has been coaching various swim clinics and such in the area for a while now as well just finishing his second summer as head coach for the Somerset Dolphins. Roger's coaching philosophy is that when you focus on strong fundamentals you will always set yourself up for success. While swimming is a sport of delayed gratification, he knows how important the accumulation of work throughout a season that will eventually get swimmers to reach their goals. Besides coaching, Roger enjoys swimming, outdoor exercise, and playing with his cat (Blue) who thinks he is a dog. He also likes to compete in open water races ranging from 800m to 10k as well as triathlons. Roger is a new dad to a little guy named Ethan who will be one in January and is training for the NYC marathon this year.
Kevin Fisher - O group - We are excited to welcome Kevin to his first season with TOLL. He is currently the head coach of Wildwood Manor Wombats and has been at Wootton Swimming and Diving since 2018.  He also coached for nine years at RMSC. As a swimmer, he started swimming with MCSP at Country Glen when he was six years old. Kevin currently swims for the newly formed Grown Up Swim League in MoCo. His team, the Slowbro Swim Club, was league champions! Kevin’s favorite part about coaching is being able to help the kids reach goals in the pool that they didn't think were possible.  More importantly, his goal is always to create a sense of community and fun for any group of swimmers I coach. Pool friends are the best friends! Outside of the pool, Kevin is always looking for the next great TV series to binge. His favorite movie of the past year was Barbie and favorite food spot is Popeyes Chicken. To offset any calories from Popeyes, he recently began to play Pickleball!
Trinity Hubbard - Minis, J2 - Trinity grew up in the pool and started swimming competitively at the age of seven. Every year she would make all-stars and divisonals, just barely missing JOs at thirteen. When she was twelve, Trinity started getting more involved in the coaching side of swim team as a pre-team coach and eventually earned a spot as an assistant coach of the Tanglewood Tigers, and began teaching private lessons on the side. After leaving the Tigers, Trinity joined the Bethesda Barracudas as a swimmer and continued to teach lessons at Kennedy Shriver Aquatic Center, until I started coaching for Tollefson this year. Trinity is finishing up an associates degree at MC in community health and will be transferring to UMD to finish a four year degree soon. Additionally, she works as a physical therapy technician. Outside of school and coaching, Trinity enjoys hiking and traveling and thinks anything outside is a great way to spend quality time.
Steve Machlin, Assistant Coach - This is Steve's fourth year as a TOLL coach. This year you’ll find him helping out at some practices, subbing when needed, and helping provide feedback and coaching at some meets. Also a lifelong swimmer, Steve has many years of MCSL experience as a swimmer, coach, and official. He's also been active with various Masters groups in the area. Steve loves working with kids regardless of their innate ability of prior swimming experience and finding ways to facilitate both individual and group progress. Swimming involves much hard work, patience and persistence but even small improvements in conditioning, techniques or times can be very gratifying with both current and long-term benefits for our swimmers. Besides coaching, I enjoy swimming at least 3x per week, biking, walking/hiking, reading and traveling. Steve’s mom is 98 and also swims most days - so keep at it for the next 8-9 decades, TOLL swimmers!
Dave Schmidt, Assistant Coach - Coach Dave comes to TOLL from Pennsylvania Aquatics (PENN-MA), a club in Bucks County, PA, where he coached from 1994 until moving to MD in late 2023. A competitive swimmer since the age of 9, Dave swam for the Willows Swim Club (and was also Head Coach there while in college) and Princeton YMCA before swimming for the University of Michigan under former Olympian and Olympic Coach, Gus Stager. Over the years, Dave has been very successful in preparing Middle School swimmers to be competitive on the High School and Senior levels. He has also seen many of his former swimmers have success on a collegiate level and beyond.
Sami Holtz, Assistant Coach - Coach Sami started swimming competitively at age 7 for Tilden Woods and swam both during the summers & in high school. Sami has been coaching for 20 years - both US club and MCSL teams including the Hydrosonic Tiburones and the YMCA Silver Spring Piranhas, the Parkland Whales, Long Branch Water Wizards, Forest Knolls Seahawks, & Fallsmead Sharks. Sami has a BS in Sports/Entertainment/Event Management from Johnson & Wales, an M.Ed in Education from Springfield College. She has been teaching Physical Education for 18 years at both the elementary and middle school levels and is currently the PE teacher at Takoma Park ES. She believes that good technique is very important and loves to see swimmers’ improvement from meet to meet. Coach Sami also likes to compare swimming skills to everyday activities and use metaphors to help the swimmers understand.