Coaching Staff

Warren Lager

Head Coach


Head Senior Team Coach and Owner Marin Pirates Swim Team

The Senior Team is coached by Warren Lager, who begins his 35th season at the helm of the Marin Pirates Swim Team. Warren has coached numerous swimmers to the Olympic Trials, Nationals and All American rankings plus over one hundred swimmers to collegiate teams. In addition to his duties as a coach of the Pirates, Warren is a physical education instructor at the College of Marin where he has coached the Men’s and Women’s Swimming and Diving Team for the past 27 years.  He is a member of the Pacific Swimming Board of Directors and former Chairman of Pacific Swimming Zone 3.  He is the past President of the California Community College Swimming and Diving Coaches Association and has served as the Coaches’ Representative to the Bay Valley Conference for the past 26 years.  Warren’ s swimming career included qualifying for the National Championships while on the Marin Aquatic Club and two years of Varsity Swimming at UCLA.
Warren and his wife Amy live in Novato.  They have two children, Jordan and Rachel. 

Phone: 415 898-0249

Tom Evers

Head Age Group Coach, Co Coach Senior


Tom has been coaching for over 20 years and is an ASCA level 3 Coach.  Tom began his coaching career with the Walnut Creek Aqua Bears and Concord Terrapins as an assistant coach in the early 90’s.    He was the San Marin High School Coach for four seasons and spent 11 years as a Marin Swim League Head Coach and was voted "Coach of the Year" in 2002 before leaving the Marin Swim League at the end of that season. 

Tom began his affiliation with the Marin Pirates in 1998 and has been the primary coach for the 14-under swimmers ever since and has produced numerous Far Western amd Western Zone finalist, champinons and over 25 NRT (National Reportable Time) swimmers.  The Age Group program at IVC has also produced 3 Junior National qualifiers along with 8 Sectional qualifiers, and two Pacific swimming record holders.

Tom and his wife Liz have lived in Novato since 1995 and have two children, Justus and Georgia .  Toms personal swimming career highlights included winning 5 individual state High School championships, an induction into the Iowa High School Hall of Fame.  Competing at Nationals on four occasions and a collegiate swimming career at the University of Iowa.  Liz and Tom started the SwimAmerica Swim School in 2003 to bring the only nationally recognized swim lesson program to College of Marin’s Indian Valley Campus and now has expanded the program with two addtional pools in Petaluma.  Tom has been the Aquatics Program Director for the IVC pool since 2001.
 "Swimming is and always has been an integral part of my life.  The life lessons I have learned from those who have coached me to those I have coached and now coach have helped form the values and discipline by which I try to live life today."


Phone:  415-892-2269

Andrew Johnson

IVC Assistant Age-Group & Masters Coach


I am originally form Humboldt County.  This will be my 8th season coaching swimming.  My love for swimming began in the Vanduzen river just 30 miles from my home.  It was long before joining the North Coast Swim Club at the age of 8 years old, that my father taught me to swim in the same swimming hole he and his father learned to swim. I continued swimming competitively until I was 18.  During my swimming career I swam in Far Westerns,Zone 3, and the All-Star team. During the 2003 and 2004 high school swim season I was MVP.  After graduating high school in 2005, I was the head coach for Redwood Swim Club for 3 years. During this time I finished my general education at College of the Redwoods. I moved to Santa Rosa in 2008 not only to coach for the Santa Rosa Neptunes, but also to pursue my Bachelor degree at Sonoma State University.  I was an assistant coach for Neptune Swimming for 3 years, while also serving as the Head Guard for the Santa Rosa City Park and Recreation Department.  In 2011 I obtained my B.A. in Criminal Justice and Criminology and I have realized during the last few years of my life that I love to coach. I have a great passion for coaching and developing swimmers and have a well rounded background working with all types of children, from at risk youth to elite level swimmers.  I am enthusiastic to build the swimming community, and as a coach I hope to give back to my swimmers what this sport has given to me.


Paul Stasiowski

Head Coach Kentfield & Scott Valley


Paul has been the Aquatics Director & Head Coach of the Scott Valley Sea Serpents swim team since the fall of 2001. He has over 15 years of coaching experience in Marin County and is thrilled to be a part of the Marin Pirates Swim Team.

Aquatics have always been a big part of Paul’s life. He started swimming competitively at the age of four and swam and played water polo at Novato High School and Loyola Marymount University.

Named “Coach of the Year” in 2004 by the Marin Swim League, Paul has led the Serpents to back-to-back undefeated seasons knocking off perennial power Sleepy Hollow. Paul is excited to be a part of the Marin Pirates and USA Swimming. 

Sarah Paoli

Assistant Coach IVC Age-Group


Sarah begins her seventh year coaching with the Pirates.  She also coaches San Marin High Swimming and Diving. Sarah has over 20 years of  experience in the aquatics field, as a swim coach and instructor.  She began her coaching career 17 years ago with the Marin Swim League as an assistant coach with the  Rolling Hills Stingrays and then with Novato Riptide.  Sarah spends her day working in a special education classroom with kindergarten to third grade.  She feels so fortunate to be able to work in the education field and coach swimming. Sarah has a daughter Kellie, who has grown up around the pool.  Kellie has been swimming competitively since she was 4 and truly enjoys being in the pool! 

                                    "Swimming is a magnificent sport for athletes of all abilities and interests"

Holly Munger

Assistant Coach IVC Age-Group


Holly is from Penngrove California. This is her fourth year of coaching for Marin Pirates but she has been involved with swimming for over 15 years. She started swimming at 5 years old for Piranha Swim Team in Rohnert Park. When she was 11, she began swimming with Twin Valley Aquatics in Petaluma and then at age 13, she swam for the Westside Aquaducks. She was a "Pacific All Star" swimmer. She graduated from Petaluma High School in 2010 being voted "Most Inspirational" her Sophomore year and "Most Valuable Player" her Freshman and Senior year. She is the Head Lifeguard at Petaluma swim center and has been working there since 2008. She is currently attending Santa Rosa Junior College to get her general education completed and get AS in Criminal Justice and then transfer to a four-year college to get her BA. She is planning on swimming this year for Santa Rosa Junior College. With all the years of experience, inside and outside the pool she is versatile in the way she coaches. She has been honored to work with many different coaches and this has led her to be a better swimmer and a better coach. She feels that swimming is the best sport to gain life lessons that truly will last a lifetime.

Tiffany Haley

Assistant Age-Group Coach IVC


Tiffany is from Rohnert Park, where she began swimming with the Piranhas at 4 years old.  She continued her swimming career throughout high school, swimming for Casa Grande High School in Petaluma and for the Novato Riptide. 

Tiffany has been running aquatics programs in Terra Linda for over five years.  In 2008, she began her coaching career with the Riptide.  During the day, she works in a kindergarten class.  She enjoys being part of the Pirate family.



Tom Sweeney

Assistant Coach Scott Valley Pirates


Tom has coached high school swimming, masters swimming, and developmental age group swimming.  He has instructed at various swim schools and provided private instruction to both novice and advanced competitive swimmers of all ages and abilities. He believes in the strength of each individual athlete as well as the swim community as a whole and is grateful for all the opportunities he has had to participate within the sport.  He teaches a foundation in technique, positive work ethic, and passion for the water.  Over the course of his own athletic career, he was blessed with truly wonderful coaches that positively influenced his life.  Combined with his joy for the water, he was inspired to follow a career in coaching the sport of swimming.  He is committed to providing a safe environment wherein each student can find as much success as possible and he enjoys sharing his competitive athletic background and aquatic knowledge with all of his students.


Bella Ferriter

Assistant Coach Scott Valley Pirates


Bella began coaching swimming in 2006. Previous to working at Scott Valley with the Pirates, she was the Head Coach for the Strawberry Seals, Assistant Coach for Lucas Valley Aquatics & Masters (USA Swimming), and the Terra Linda Orca's Assistant Coach.  Bella also trains swimmers in open water swimming for triathlons and the Tiburon Mile Swim.
Bella has spent over half her life coaching.  Her favorite part of coaching  is the enjoyment she feels when a swimmer’s confidence develops as their skill set increases.“Passing along my passion of swimming and sport is what it's all about for me."  

Lynn Lathouwers

Kentfield Assistant Age-Group Coach


I began swimming with Lucas Valley at the age of 8. I continued swimming at Terra LInda HIgh School and still keep up with it as I get older. I attended UC Davis where I played water polo and coached for the Dixon Dolphins swim Team.  While living in Wyoming, I coached with the Jackson Hole Stingrays for a number of years. I spent two years in South Lake Tahoe as the assistant coach for the Tahoe Swim Club before moving back to Marin to be an assistant coach with the Larkspur Tidalwaves. I have just finished up my first season as the Water Polo coach at Terra Linda. I'm excited to have a chance to coach with the Pirates.

Marco Farahmand

Kentfield Assistant Age-Group Coach


Marco was born and raised in Marin County and began swimming at age 10 with the Tidalwaves.  Later he joined the Marin Pirates Senior team as a sophomore in high school until his graduation in 2010. While concurrently swimming for Pirates, Marco was also was the captain of the Redwood High School Water Polo team as a junior and senior. Over the course of his high school career he has received two MVP awards for Redwood Water polo, MCAL Water Polo honorable mention and second team, All-America Swimming award for his part in the Redwood school record 400 free relay, and competed in sectionals for 50 free, 100 free, and 100 butterfly. While in college, he also swam for 1 year with head coach Warren Lager on the College of Marin swim team where he got 2nd place at the Bay Valley Conference Meet for 100 butterfly.  He began officially coaching while attending college, with Redwood Water Polo in the Spring of 2011 and since then has gone on to coach Tidalwaves, TPC Water Polo, and Redwood Swimming. When not swimming or coaching, he is planning his transfer to a 4-year UC with a major in Psychology.

Jamieson Prevoznak

Head Coach Masters


Much of my life experience has carried me forward to the opportunity to be a swimming coach.  My swimming career began when I was a child in youth group and into high school where I was a long distance swimmer and diver.  However, it was then when I realized my deep passion for instructing and coaching swimming.  I was 16 when I was hired as a swim instructor at the local community pool.  There I was able to learn how to organize and execute lesson plans for both large groups and individual instructions. Upon graduation from high school, I entered the United States Marine Corps where I received survival water training and later had the opportunity to become an instructor of these same techniques and skills.

            Upon my end of military service, I moved to San Francisco where I continued in aquatics.  I was recertified as an American Red Cross lifeguard and swim instructor which later lead me to employment at the Jewish Community Center, the YMCA Marin, and various other aquatic facilities.   In addition to coaching the Marin Pirates Masters, I am currently working at the YMCA Marin as the afternoon Masters swim coach and have assisted with the age group swim program as needed. 

           I am a cum laude graduate of San Francisco State University where I majored in Chinese Studies.  I am currently a graduate student at San Francisco Theological Seminary working towards a Master’s in Divinity.  I have earned my USA Swimming coaching credentials and am currently working towards the American Swim Coach Association Level II certification.  I am a member of the Dolphin Club in San Francisco where I participate in open water swimming.  I am very happy to become a member of the Marin Pirates coaching staff and look forward to helping Masters swimmers achieve their swimming goals.

Phone number: 330-502-0766 

Griff Helfrich

Senior Team Dryland Coach


I was born and raised in Williamsburg, Virginia, where I started swimming and playing other sports at an early age. Competitive swimming helped me earn a scholarship to swim in college at the University of North Carolina, where I specialized in the 200 butterfly before a shoulder injury forced me to retire from competing after 3 years. I earned my degree in Philosophy in 2005 and have been coaching swimming at every level and every age group since then. In 2011, I started training at CrossFit gym and have since gone on to compete at CrossFit and become a Level 1 Certified CrossFit coach and am currently employed at Tamalpais CrossFit. Living in California is the fulfillment of a lifelong dream for me and I am extremely excited to become a part of the Marin Pirate family and share my wisdom, passion and experience with everyone!