Coaches & Staff
KEVIN ZAKRZEWSKI, CSCS
Aquatics Coordinator - Stevenson HS
Head Coach - Patriot Aquatic Club
Senior Vice Chair - Illinois Swimming
Group: Swim - Elite
EMAIL: kzakrzewski@d125.org
Hometown:
Deerfield, IL
Alma Mater:
Stevenson High School (2000)
University of Wisconsin (2004)
Coach Kevin returned to Stevenson in August 2015. A 2000 SHS graduate, he went on to study Atmospheric and Oceanic Sciences at the University of Nebraska–Lincoln (2000–2001) and the University of Wisconsin–Madison (2001–2004). Kevin was a four-time varsity letter winner (one at Nebraska, three at Wisconsin). While at UW–Madison, he earned three NCAA All-America honors and swam the breaststroke leg on the 200 Medley Relay that placed fourth at the 2004 NCAA Championships.
In 2006, following the passing of a close friend, Kevin came out of retirement and qualified for the 2008 U.S. Olympic Trials in both the 100 and 200 breaststroke. That same year, he helped co-found the Christopher Steele Foundation, where he served as President beginning in 2010. Over a decade, the foundation donated more than $100,000 to the Northwestern Memorial Foundation for sarcoma research, as well as provided scholarships supporting SHS hockey and baseball athletes.
After the 2008 Olympic Trials, Kevin began his coaching career as Assistant Head Coach at CATS Aquatic Team (2008–2012). He later joined Northwestern as Head Senior Coach of NASA-Wild and also volunteered with the Northwestern Women’s Varsity Swim Program (2012–2015).
Since 2022, Kevin has served as Senior Vice Chair for Illinois Swimming, where he works alongside the Board of Directors to strengthen the competitive swimming community across the state. In this role, he has helped develop initiatives to enhance athlete and coach education, improve meet operations, and expand collaboration between USA Swimming and high school officials. Projects like the Senior Quad Challenge, Athlete Leadership opportunities, and also Project LA.
Kevin is a Certified Strength & Conditioning Specialist (CSCS) and holds a Level 4 certification from the American Swimming Coaches Association (ASCA).
CAROLYN GREVERS
Assistant Aquatic Coordinator - Stevenson HS
Governance Committee - Illinois Swimming
Group: Swim - Patriot Plus
EMAIL: cgrevers@d125.org
Hometown:
Lake Forest, IL
Alma Mater:
Lake Forest High School (1997)
University of Kansas (2001)
Carolyn Grevers joined Patriot Aquatics Club in April 2025 as the Associate Aquatics Coordinator and Head Coach of the Patriot Plus program. Prior to that, she served as the Director of Scout Aquatics at Lake Forest High School from 2005 to 2025 and was the Head Coach of the Girls Swimming & Diving team at Lake Forest High School from 2005 to 2020.
Carolyn earned a Bachelor of Science in Biology from the University of Kansas in 2001, where she was a standout collegiate swimmer—competing all four years, breaking multiple school records, and qualifying for the Division I NCAA Championships. She also competed in numerous national-level meets, including the 2000 U.S. Olympic Trials. After graduation, she conducted neuroscience research at Rosalind Franklin University before returning to her true passion—coaching—in 2005.
Carolyn's dedication to the sport began in early childhood and is deeply rooted in her family's legacy. Both of her parents swam for the Netherlands, with her father also competing in water polo at the national level. That tradition continues today: her brother Andrew is the head coach at the University of Missouri, and her brother Matt, a four-time Olympic gold medalist and two-time silver medalist, owns and operates Demont Swim School in Arizona.
Thomas Schwingen
Thomas Schwingen has been involved with swimming as both a competitive swimmer and coach for most of his life. He started swimming competitively at the age of 5 and continued through the age of 20 for UIC. His highest accolade was qualifying and swimming the Toyota US Open in 2000. After college, he coached for 2 years at the Oak Brook Stars swim team. Then, he went on to a ‘normal’ daily job for 7 years but wasn’t really enjoying it. So, he came back to coaching in 2011, first at PAC for 2 years, then Ultimate Swimming for 2, and back to PAC in 2015. Thomas has coached multiple Regional, State, and Zone qualifiers and Champions throughout his career. He is very passionate about swimming and being able to give his swimmers all the knowledge and tools needed to be the best swimmers they can be.
Megan O'Sullivan
Swim Lesson Coordinator - SHS
Assistant Coach - PAC
Group: Swim - Lil Patriot
Email: mosullivan@d125.org
Hometown:
Alma Mater:
Megan is our Lead Coach for Little Patriot. She is also our Swim Lesson Coordinator.
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Ayrton Kasemets
HEAD SHS Girls Swim/Dive Coach - SHS
Assistant Coach - PAC
Email: akasemets@d125.org
Hometown:
Alma Mater:
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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Fusce non hendrerit tortor, aliquam consequat nibh. Cras sit amet convallis lectus, et cursus elit. Nulla facilisi. In fringilla libero nec lectus semper, eu posuere sem eleifend. Vestibulum sodales in nulla non tincidunt. Proin tristique, erat ut posuere scelerisque, mauris eros fermentum metus, sed efficitur felis lacus eu velit.
Suspendisse nec varius elit, non molestie ante. Pellentesque turpis orci, rutrum et interdum at, ornare id nulla. Aenean posuere libero non neque fermentum ultricies. Nunc egestas, urna sed pretium hendrerit, nulla lacus faucibus enim, ut tempor nulla quam id ex.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Fusce non hendrerit tortor, aliquam consequat nibh. Cras sit amet convallis lectus, et cursus elit. Nulla facilisi. In fringilla libero nec lectus semper, eu posuere sem eleifend. Vestibulum sodales in nulla non tincidunt. Proin tristique, erat ut posuere scelerisque, mauris eros fermentum metus, sed efficitur felis lacus eu velit.
Suspendisse nec varius elit, non molestie ante. Pellentesque turpis orci, rutrum et interdum at, ornare id nulla. Aenean posuere libero non neque fermentum ultricies. Nunc egestas, urna sed pretium hendrerit, nulla lacus faucibus enim, ut tempor nulla quam id ex.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Fusce non hendrerit tortor, aliquam consequat nibh. Cras sit amet convallis lectus, et cursus elit. Nulla facilisi. In fringilla libero nec lectus semper, eu posuere sem eleifend. Vestibulum sodales in nulla non tincidunt. Proin tristique, erat ut posuere scelerisque, mauris eros fermentum metus, sed efficitur felis lacus eu velit.
Suspendisse nec varius elit, non molestie ante. Pellentesque turpis orci, rutrum et interdum at, ornare id nulla. Aenean posuere libero non neque fermentum ultricies. Nunc egestas, urna sed pretium hendrerit, nulla lacus faucibus enim, ut tempor nulla quam id ex.
Sean joined the PAC/NIPC staff in 2005. He has served as the Head Boys Water Polo Coach at Stevenson High School since 2007. Sean is a graduate of Stevenson High School and during that time was a member of USA Water Polo Youth and Junior National Teams. Sean graduated from Loyola Maramount in Los Angeles and was a member of 3 NCAA Final Four Teams.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Fusce non hendrerit tortor, aliquam consequat nibh. Cras sit amet convallis lectus, et cursus elit. Nulla facilisi. In fringilla libero nec lectus semper, eu posuere sem eleifend. Vestibulum sodales in nulla non tincidunt. Proin tristique, erat ut posuere scelerisque, mauris eros fermentum metus, sed efficitur felis lacus eu velit.
Suspendisse nec varius elit, non molestie ante. Pellentesque turpis orci, rutrum et interdum at, ornare id nulla. Aenean posuere libero non neque fermentum ultricies. N
unc egestas, urna sed pretium hendrerit, nulla lacus faucibus enim, ut tempor nulla quam id ex.
Brian joined the PAC/NIPC staff in 2005. He was a graduate of Stevenson High School where he now serves as an Assistant Girls Water Polo Coach since 2008. Brian graduated from the University of Illinois at Champaign where he also was continued his water polo career with the Illini.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Fusce non hendrerit tortor, aliquam consequat nibh. Cras sit amet convallis lectus, et cursus elit. Nulla facilisi. In fringilla libero nec lectus semper, eu posuere sem eleifend. Vestibulum sodales in nulla non tincidunt. Proin tristique, erat ut posuere scelerisque, mauris eros fermentum metus, sed efficitur felis lacus eu velit.
Suspendisse nec varius elit, non molestie ante. Pellentesque turpis orci, rutrum et interdum at, ornare id nulla. Aenean posuere libero non neque fermentum ultricies. Nunc egestas, urna sed pretium hendrerit, nulla lacus faucibus enim, ut tempor nulla quam id ex.