Water Polo Coaches:
Matt Warshaw—Director
South Coast Aquatics Director Matt Warshaw is a Thousand Oaks native, South Coast alumnus, and graduate of Thousand Oaks High School, where he competed as a varsity water polo player and team captain. Matt's coaching experience includes a season with the Newbury Park High School program before founding the Golden Bay Water Polo Club in 2001. Golden Bay began as a youth program, with just nine athletes, but quickly grew to be among the most competitive programs in Ventura County. The Golden Bay program merged with the South Coast Water Polo Club in 2003, and expanded to include programs for four separate age divisions, including high school. In 2004, Matt added a swim program to the South Coast catalog. In 2017 South Coast took over the Malibu Water Polo Foundation at Malibu High School & in 2019 they merged with the Titan Water Polo Club.

Over the years, the South Coast Water Polo Club has achieved tremendous success throughout California and Hawaii, including a Bronze Medal at the 2008 Junior Olympics (14 & Under Boys), 6 San Diego County Cup medals, a Hawaiian Invitational championship (2004) and runner-up finish (2006), and a top-20 finish at the 2006 Junior Olympics for the boys (15th place) and girls (29th place) teams. At the 2010 Junior Olympics, South Coast placed 10th in the 14 & Under Boys Platinum Bracket; and 5th in the 14 & Under Girls Gold Bracket. At the 2011 Junior Olympics South Coast was represented with eight teams across the age groups, the 16U boys finishing a club best 10th in the platinum bracket. In 2012 South Coast qualified nine teams, including a silver medal finish with the 18U boys. With more than 300 current members, South Coast is proud to boast nearly 3,000 alumni athletes, including many NCAA Division I, II, and III players; and continues to thrive as the third oldest club water polo program in the state of California.

In addition to his work with the South Coast program, Matt holds a B.A. in Communication Studies from Cal State University Northridge (CSUN), where he is also the head coach for the Division I women's water polo team since 2016. Prior to his work with the Matadors, Matt spent 12 years as an assistant coach for the men's and women's water polo teams at California Lutheran University, which celebrated Women's Division III National Championships in 2007 and 2010. From 2012-2015 Matt joined the Olympic Development staff as an assistant coach for the 10th/12th grade and under boys in the Coastal California Zone.
Trevor Campbell—12U & 14U Boys & Girls

Trevor Campbell has been playing water polo and swimming since 2012. He is a left-handed attacker who has played four years of water polo for the 2013-2015 Marmonte League Champions, Agoura High School. Trevor was a starter for three out of the four years and was the team captain his senior year. Trevor also excelled on the Agoura High School Swim Team.  Aside from his high school competition, Coach Campbell played four years for Los Angeles Water Polo Club, where he was a starter for three of the four years and went to Junior Olympics all four years, playing in Platinum his last two years. Later, Trevor went to California Baptist University for a year and red-shirted for their water polo team. In addition to his South Coast duties Trevor is an assistant coach at Westlake High School for the boys water polo program. He is currently studying Kinesiology with a final goal of becoming a Physical Therapist.

Jens Cole—16U & 18U Girls
Jens has been playing water polo since the age of 11, getting his introduction and early exposure to the sport by Malibu Youth Water Polo Foundation. Under the coaching of current South Coast coach Hayden Goldberg and Malibu High School head coach Mike Mulligan, Jens fueled a love and passion for the sport early on. He played high school water polo at Malibu High School, where he played varsity all four years. At his time at MHS, he surpassed the all-time assist record, was awarded team MVP his senior year, was selected to All-Tri Valley League first team, first-team All-Ventura County tournament team, and Southern California all-star team. In 2011, his team were league champions. In 2012, they were ranked #1 in the D6 league and also were league champions. In 2013, his senior year, the team finsihed runner-pp in the CIF Finals game.

Academically, Jens was a four-year honor roll member and was also a California Scholarship Foundation member all four years as well. His club water polo experience included four years with South Coast. Playing with the South Coast water polo team, they won gold at Junior Olympics. He now plays at Pepperdine University, where he is finishing out his water polo career as a senior on the team. He is studying political science with an emphasis on social action and justice. He has been an Academic All-American all four years at Pepperdine. He intends to graduate this year and attend graduate school at Pepperdine.
Izzy De Souza—Goalie Coach
Izzy de Souza began playing water polo at the age of 10 in Irvine, California. Growing up, she played club at Socal, Northwood, Vanguard, and Patriot. Izzy played water polo at Beckman High School, achieving scholar-athlete all four years. She was awarded the Coach’s award her Junior and Senior year, and was Goalie of the year twice. Izzy attended ODP two years, and was awarded the Nick Johnson Award. Izzy is currently a Junior at California Lutheran University. She was awarded First Team All American and First Team All-SCIAC her freshman year. She was also awarded Honorable Mention All American, Outstanding All Academic, and Second Team All-SCIAC her sophomore year.
Kaitlin Gardhouse—16U & 18U Girls
Kaitlin Gardhouse started playing water polo at the age of 12. She played for Agoura High School where she was a 4-year Varsity Water Polo player. During her time at Agoura High School, she was a 3 time USA Water Polo Academic All American. She was named to the 2016, 2017, and 2018 All-Marmonte League first team, 2016, 2017 and 2018 second team All-CIF, 2018 VC Star All County Girls Water Polo first team, 2018 AHS Defensive Player of the Year, 2018 Agoura High School Winter Athlete of the Year, contributed to AHS being 2015, 2016, 2017 and 2018 Marmonte League Champions, and 2018 AHS captain. Kaitlin earned a degree in Biology from California Lutheran University in 2022 where she was a four year starter, named to the SCIAC All-Conference team and earned All-American honors.
Hayden GOldberg Hayden Goldberg—16U & 18U Boys
Hayden was a three-year varsity water polo player and swimmer at Malibu High School, where he earned 1st team all-league honors MVP awards. He helped lead the Sharks to CIF playoff appearances each year, and qualified as a CIF swimming finalist. Hayden went on to compete with the Ventura College water polo program, helping his team to reach the conference finals.

As a coach, Hayden has spent the last 15 years as head coach of the Malibu Youth Water Polo Club. He currently coaches at Malibu High School as the head coach for the Malibu High School Boys and Girls polo team. In his coaching at Malibu he has made a combined five appearances in CIF finals. In 2013 Hayden coached the Malibu 16U boys team to a 5th place finish at the Junior Olympics. In 2014 Malibu won their first CIF title. 2016 Hayden's Southcoast 16u won 5th in the Gold Division.

Elijah Graves—16U & 18U Girls
Elijah started playing water polo for Agoura the summer going into his freshman year, 2013. Elijah also played for the Los Angeles Water Polo club and was a center on teams that won gold in the 16U gold division, placing 6th in the 16U platinum division, and 7th in the 18U platinum division. After graduating, he continued to play at Santa Monica College for the 2018-2019 seasons, where he broke the all-time records for steals, goals, and assists. Achieving Western State Conference 1st team and MVP two years in a row inspired Elijah to keep pursuing a water polo career leading him to play Division 1 at California State University of Long Beach. At Long Beach, he started as a 1-2 side attacker and post-up player, helping the team to the finals of the Gold Coast Conference. After losing his senior year of play to the pandemic, He graduated with a degree in environmental science and policy.
Lincoln Hall—12U & 14U Girls
Lincoln began water polo at eight years old and started swimming competitively at fourteen. He attended Camarillo High School where he was a two-time MVP and 4-year scholar athlete,2nd team All-County, 1st team All-CIF and a team captain in his junior and senior seasons on the water polo team. Also competing for the swim team, he is the 100 breastroke school record holder and also a member of the 200 medley relay team that holds the school record. Lincoln was a member of many South Coast teams from 2017-2021, capturing a gold medal at the 2021 Junior Olympics in the gold division. He now attends Cal Lutheran University where he competes on both the water polo and swim teams and is majoring in Sports Management with aspirations to become an athletic director following college.
Chet Hardy—14U & 16U Boys
Chet Hardy first began to play water polo in 7th grade for the Titan Water Polo Club at Rio Mesa High School. He then competed all four years at Camarillo High school where as a sophomore on the Varsity team, Chet was awarded Second Team All-League honors. His junior year, he achieved First Team All-League and was named Camarillo MVP. In his senior campaign he was the team captain and helped lead the team to the first league championship in school history. In addition to water polo Chet was also a four-year member of the Camarillo swim team. Following high school, Chet went earned a Bachelors Degree in History while also coaching for Gold Coast Water Polo Club. Chet was the lead coach for the 14U girls team at the 2019 Junior Olympics. Chet has also coached basketball at Oxnard High School and Rio Del Valle Middle School. In addition to his South Coast role Chet is the head boys and girls water polo coach at Newbury Park High School. 
Andrew Maitam—16U Boys
Andrew Maitam started playing water polo at the age of thirteen at Calabasas High School. He became a three-year varsity starter where he was a 2-time all-league selection, 2-time scoring leader, MVP, team captain, and record holder for goals in a game (11). He played club water polo for Bruins WPC where he competed in multiple Junior Olympic and Futures competitions. In addition to water polo he was also a three-time letter winner and 2-time all-league selection in swimming. Andrew started coaching water polo shortly after graduating from CHS in 2017. He has been directly involved with both the boys and girls programs at Calabasas High since 2018, where he has either served as an assistant or a head coach. He held the position of head 18U girls coach at SFV water polo from 2019-2021 before joining the South Coast staff in 2022. Andrew received his BA and teaching credential in English Language Arts from Pepperdine University in 2022.
Bethany Metcalfe—Splashball & 12U Girls
Bethany Metcalfe started playing water polo at 12 years old. She played for Oakdale High School, where she was a 4-year Varsity swimmer and water polo player. During that time, she was awarded First-Team All-League in 2017 and 2018, as well as League and Team MVP in 2018. She also was recognized as the First Team All-CIF for Division I San Juaquin Section in 2018. Bethany was awarded Academic All-American in 2017 and 2018. She helped Oakdale win the Valley Oak League in 2015, 2016, and 2018 and a Division II section championship in 2016. Bethany now attends California Lutheran University, where she has helped the Regals win a SCIAC championship in 2021 and has been in the Scholar athlete society every year. While at CLU, she has been earning a degree in Exercise Science with an emphasis in Health Professions with aspirations of becoming an Orthopedic Surgeon. 
Kaityln Moguel—10U & 12U Boys
Kaitlyn Moguel has been playing water polo and swimming since she was ten. She started her water polo career at Rose Bowl Water Polo Club and at the age of twelve and moved clubs to Bruin WPC. She attended high school at Crescenta Valley High School where she was on varsity all four years. She earned All-Pacific League accolades all four years and League MVP her junior and senior years. She moved on to play Division 2 NCAA women's water polo at McKendree University pursuing a degree in Biology and earned a spot on the All-Freshman Team. After her freshman year she transferred to California State University, Northridge, and played under Matt Warshaw. She is currently pursuing her degree in kinesiology.
Ricky Mulcahey—10U & 12U Boys
Ricky started his water polo career at Crescenta Valley High School, where is was named First-Team All-Pacific League and MVP three consecutive years. He then went on to compete at Los Angeles Valley College where he was named First-Team all-conference in his sophomore year. From there he attended Cal Lutheran where he was a two-year starter in his junior and senior seasons and completed a degree in Exercise Science and Sports Medicine. Ricky began coaching for South Coast in 2009, taking multiple teams to Junior Olympics through the years. Ricky started coaching at Crescenta Valley High Schol in 2014 and was named coach of the year in 2014, 2015, 2016 & 2017 with Pacific League titles in 2014, 2015 and 2016. Ricky is now a PE teacher at Fremont and Muir Elementary School and lives in Fillmore with his wife and daughter.

Backus Nahas—Goalie Coach
Backus started playing water polo at the age of 14 at Porterville High School, continuing on at Ventura College and Master’s programs. Four of his years in Master’s he played under USA Water Polo Hall of Fame coach Sandy Nitta at Team Vegas/Henderson Water Polo Club. He has coached youth sports since 1997 including water polo, basketball, baseball, MMA and soccer. Backus has a strong focus on fundamentals, positive attitude and teamwork to help inspire young athletes to achieve their goals in sports. In addition, Backus owns a family farming operation that grows and markets strawberries and enjoys spending quality family time with his wife Kamala and their three children Asha, Sassin and Samir.

Greg Olsen—10U Boys & Girls
Greg Olsen started playing water polo his freshman year of high school. He attended Thousand Oaks High School where he was a three year varsity member and an MVP his senior year. He obtained All-CIF, Ventura County Players of the Year and First Team All-Marmonte League accolades, while setting the school record for assists. Greg played with South Coast throughout high school where he won a gold medal in the 2021 Junior Olympics in the gold division. In addition to his South Coast duties he is currently coaching at Newbury Park High School and is attending California Lutheran University and majoring in Business administration.
Adam Payan—16U & 18U Boys
Adam began playing water polo when he was ten years old in Ventura. He attended Ventura high school where he was a three year varsity starter. During his high school career the Cougars were finals runner-up in CIF Division 4 & semi-finalist. Adam earned 1st team All CIF honors & twice was selected to the 1st team All Channel League. In addition to twice being selected to the 1st team All County team and a high school All-American. Coach Payan was on the Ventura High School staff from 2005-2009 as soph/frosh, JV, & varsity assistant coach. Then from 2009-2011 coached Ventura Water Polo Club 16U & 18U boys where in 2010 they traveled to Budapest, Hungary for multiple international tournaments and common training with the elite clubs all over the country. From 2011–2013 he worked with the Gold Coast 12U teams before joining the South Coast staff in 2018.

Cody Pletcher—Tournament Director & Asst Coach
Coach Pletcher has been the director of Ventura County Cup for eight years, successfully hosting years of tournaments. In addition to Ventura County Cup each December South Coast hosts The Tune Up Cup in May for teams prepping for Junior Olympic qualifying. Pletcher heads that tournament up as well. He also serves as the head coach at California Lutheran University for the men’s and women’s water polo teams. Originally from Houston, Tex., he attended Alvin High School where he played water polo for three years. He earned all-conference selections twice and an all-state bid his senior year. He earned a degree in History while minoring in Education at Whittier. Cody then went on to earn a Master's degree in history at Cal State Northridge.

Mike Potter—14U & 16U Boys
Michael Potter began his water polo career at age 11 with South Coast Aquatics. He went on to compete at Thousand Oaks HS where he was a three year varsity letter award winner, leading the Lancers to the semi finals in CIF his senior year, along with MVP honors and a 1st team CIF selection. Michael then attended California Lutheran University where he was a four-year member of the swim and water polo teams. He graduated with a BA in Criminal Justice and is currently pursing a career in law enforcement. He enjoys training and competing in open water swimming.
Ryan Prem—12U & 14U Girls
Ryan Prem started playing water polo at age 11 beginning with Simi Water Polo. He went on to play for Royal High School, where he was a three year varsity letter for both water polo and swimming. He specialized at center defense as well as being a left handed attacker in water polo. For swimming, his events were 500 yard freestyle and 100 yard butterfly. Ryan Prem joined South Coast just after his freshman water polo season. Playing for the 16u and 18u teams. He currently attends Moorpark College while majoring in Environmental Science.

Jason Rosenthal—112U, 14U Girls and Girls Director
A 32-year coaching veteran, Coach Jason served as the girls Head Coach for 26 years and the Boys' Head coach from 1992-2003 & 2014 and led the boys' program to four Marmonte League Championships in 1994, 1998, 2002 and 2014 as well as 12 straight playoff appearances. In 1996 Jason helped to form the first ever girls water polo team at AHS. From 1996-2022 he led them to 22 Marmonte league titles, 6 CIF Championship Finals, 2 CIF Titles and has won a CIF record 170 (and counting) consecutive league games.

  • Marmonte League Boys Coach of the Year- 1994, 1997, 1998, 2002, 2014
  • Marmonte League Girls Coach of the Year- 1999-2003, 2005-2017, 2022.
  • Coastal Canyon League Girls Coach of the Year- 2019, 2020
  • CIF Coach of the Year- 2000, 2001, 2006, 2007, 2022
  • Los Angeles Daily News Coach of the Year- 1998, 2002- for Boys Team
  • Los Angeles Daily News Coach of the Year- 1998, 2000, 2001, 2002, 2006, 2007, 2008 for girls team

During his 26 seasons as Agoura High School Girls head coach, Jason complied an overall record of 537-214 and a league record of 226-8. Jason formerly headed the HS Girls Program at Los Angeles Water Polo Club. He has also been involved with the National Youth Program. From 1999-2004 & 2020-Present he coached the youth zone team for our area. Born and raised in the area Jason is a member of the local community living in Moorpark with his wife and two daughters ages 9 and 11.

Kayden Sourbeer—12U & 14U Boys
Kayden began his water polo career in 2009 at the age of eight, and played for MAC aquatics for three years before joining South Coast at the age of eleven, playing on the 14u team under Coach Tim Settem. He is a left-handed 4-5 attacker and post up player. Kayden attended Moorpark high school earning four varsity letters as well as defensive player of the year, offensive player of the year, two team MVP awards, Coastal Canyon league MVP, VC Star all county first team, and team captain in his senior year. He competed in Junior Olympics five times and captured a bronze medal in 2013 with Sharks and a gold medal in 2021 with South Coast. He is a certified personal trainer and is currently pursuing a degree in exercise science in his second year at Moorpark college with aspirations in becoming a physical therapist.
Sophie Spivack—16U & 18U Girls
Originally from Malibu, California, Sophie played 4 years of varsity water polo for Malibu High School. She also played club with S&S Bruin until 2018, where they placed 11th in the platinum division at the Junior Olympics in 2017. After high school, Sophie continued her career at San Jose State University for four years, competing at the Division 1 level in the MPSF conference against some of the top teams in the nation. She worked her way into the starting center position and earned the title of captain by the end of her junior year. While she was playing and studying at SJSU, she also coached at the high school and club levels around the Bay Area. Sophie graduated from San Jose State in the Spring of 2022 with a Bachelors in Business. 

Jennifer Vreeke—10U & 12U Boys
Vreeke's passion for the pool began as a diver at age 11. By 13, she discovered water polo and went on to play for Thousand Oaks High School, where she also qualified for CIF competition in diving each of her four seasons with the Lancers. Vreeke then attended Cuesta College, where she began her competitive swimming career. She won conference championships in 1meter diving, the 50 breast stroke, and was a member of the 400 medley relay A team. She also competed at the State Championships in waterpolo, swimming, and diving in each of her years at Cuesta.

Vreeke began her coaching career in high school as an assistant Dive coach for the club Dive Thousand Oaks, as well as coaching summer diving classes with Conejo Recreation and Park District. Once in college, she worked as an assistant women's waterpolo coach and the diving coach at Cuesta College. Vreeke then transferred to California Lutheran University, unable to finish out her waterpolo career due to a diving injury. In 2010 she graduated with her Bachelor’s Degree in Art from CLU, then in 2013 received her Master’s Degree in Education with single subject teaching credentials in Art and Physical Education from Pepperdine University. With over 13 years swim instruction and youth coaching experience, she has served as swim lesson coordinator and aquatics director at the Conejo Valley YMCA. She now works as an assistant manager at the CRPD Community pool, and hopes to get a teaching job with CVUSD. Coach Vreeke is the Youth Novice swim team head coach as well as the 10U &12U boys waterpolo head coach.
Candice Vorbeck—12U & 14U Girls
Bio coming soon.
Xavier Volgenau—16U & 18U Boys
Xavier Volgenau began swimming for the Pleasant Valley Swim Club in Camarillo at age 12. He went on to be a four-year varsity letter winner in swimming at Newbury Park High School, where he represented the Panthers as a three-tim CIF qualifier in the 100 breaststroke and 200 Individual Medley. Xavier also played high school water polo for Newbury Park, earning 1st team All-Marmonte League honors his senior year. He then played water polo for San Jose State University's club team, and graduated with a degree in forensic psychology. Xavier is pursuing a second degree in business marketing at Cal State Channel Islands with plans to continue on for an MBA. Xavier's aquatics career also includes nine years working for Conejo Recreation & Park District.