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Patriot Aquatics has a team of dedicated coaches for each squad, qualified for numerous finals.
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DUJE
GRUBISIC

Club Director and President
Head Coach - Age Group Water Polo, 16U & 18U Boys Water Polo

Duje Grubisic’s water polo career began in Croatia, where he played professional water polo, starting at the age of sixteen, and had the immense opportunity of being coached by some of the best water polo coaches in the world. Duje then landed a full water polo scholarship at Concordia University where he was voted most valuable player and earned all-American honors, three years in a row. After his undergraduate work, he was offered a graduate scholarship and while earning his Master’s Degree also landed a position as a graduate assistant coach for the men’s water polo team at Concordia. Additionally, Duje has been recognized as the captain of every water polo team he has been a part of.

PATRIOT AQUATICSOUR WATER POLO COACHES

Patriot Aquatics coaches are committed to excellence.
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COACHTIJMEN EGBERTS

10U Coed

Coach Tijmen Egtberts was born and raised in The Netherlands. He started playing competitive water polo at the age of 8. His talent got recognized at Santa Rosa Junior College where he played for two years and was added to the coaching staff for one year as well. Tijmen continued his education at Concordia University where he played water polo for one year and was Senior Captain of the swim team his final year. He graduated in 2016 with a Bachelor’s degree in sports management. He also has a Master’s degree in coaching and athletic administration. As a coach, Tijmen has 12 years of experience and in 2017 he coached a 10U team that won the gold division at NJO’s, in 2019 his team got 3rd place and in 2021 Tijmen coached both 10u girls and 10u mixed to become national champions. That was the first time in usa waterpolo history two teams from the same club won JOs at the 10u level.

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ASSISTANT COACHJEFF HAMILTON

10U Coed

Coach Jeff has been with Patriot Water Polo since 2019 as an assistant 10u coach. From 1991-1995 Jeff played water polo with Canyon High School in Anaheim Hills. In 1994 he was selected to play with the USA Junior National team and then went on to win two back-to-back California State Championships with Golden West College. Since then, Jeff has continued to play water polo all over the country, even with the Navy Seals in Coronado. Jeff’s principal work is in physics, when he is not coaching or surfing, he can be found developing shot probability and data science models to help guide the 10u team to success.

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COACHBOJAN HRLEC

12U Boys

Bojan Hrlec was born and raised in Croatia, where he played for Kvarner and Primorje. He was a member of the Croatian Cadet/Junior Water Polo National Team (age 13-18). While studying at West Valley College, Bojan led the team to the state championship as the leading goal scorer and All American 2010/11 and 2011/12. While studying at the University of Califonia he was a member of the UCI Men’s Water Polo Team, NCAA Division 1 All American, and led UCI in scoring as a Junior with 63 goals. He graduated class of 2014. Bojan was 16U Assistant Coach, 12U, and 14U Head Coach from 2015 to 2017 at Del Mar Water Polo Club. As a Program Director at Del Mar Water Polo Club, he helped the club grow from 80 to 160 members, overlooked and coordinated all age groups and 10+ coaches, organized tournaments, year-long practice scheduling, as well as a club organization. He was also a 10U and 18U Head Coach and a club President until September 2018. Bojan was 12U and 18U Head Coach at La Jolla United Water Polo Club and assisted in strategically growing the club from 130 to 280 members in 1 year. Currently, coach Bojan is representing Patriot as the second year 12U head coach (finished 7th at JOs in his first year) as well as the assistant coach at University of California, Irvine.

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ASSISTANTSKYLER CHANOVE

12U Boys

Skyler Chanove started playing water polo career at the age of 7 with team Vegas/ Henderson and continued his career with the SoCal water polo club. He went on to play for Foothill high school and later played for Orange Coast College men’s water polo team. Skyler is looking forward to help and teach the ways the amazing sport

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COACHPRESLAV DJIPPOV

14U Boys

Preslav Djippov is in his second season as a Head Men’s and Women’s Coach at Westcliff University in Irvine. He coached the club men’s water polo team at USC, before taking over the women’s water polo program at Columbia University, where his team won the New York State Division Championship in 2017.

At the same time, Djippov was coaching the junior and senior water polo teams at Greenwich Aquatics Club in Greenwich, CT. Coached the ODP Camp at the Olympic Training Center in Colorado Springs 2017. Coached and prepared many national travel team players. Won the Gold division title at the National Junior Olympics 2019 with the 18U boys team in Orange County.

After relocating to the west coast, Djippov accepted coaching positions with the Del Mar Water Polo club in San Diego, as well as Canyon Crest Academy high school, coaching the Girls Varsity team CIF DIV1.

Before coming to the states in 2016, Djippov was the assistant coach of Water Polo Club Cherno More-1948 in Varna, Bulgaria.

A graduate from the University of Economics in Varna, with a Bachelor’s Degree in Statistics and Econometrics along with a Masters Degree in Finance, Djippov was a member of the Bulgarian Senior and Junior National water polo teams and won the Bulgarian National Championship in 2009 and 2010. Winner of the Bulgarian National Cup in 2011 and 2012.

COACHBAYLOR REYNOSO

14U Boys
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COACHMATT CALHOUN

12U Girls

Coach Matt Calhoun is from Visalia, CA in the central valley where he played water polo and swam for Mt. Whitney High School. After graduating he attended the College of the Sequoias for an associate’s degree, where he also swam, before transferring to UC Davis. At Davis he studied Psychology and played for the men’s club water polo team. Matt has been coaching water polo since the age of 19 beginning with the JV girls water polo team at Golden West High School. While in college he also coached the women’s club water polo B team and was president of the men’s club team for 2 years. Post-college Matt moved to Southern California and began assistant coaching for the Socal boy’s and girl’s 18U and 16U water polo teams.

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COACHHANNAH BRADLEY

14U/HS Girls

Coach Hannah started playing water polo when she was 7 years old and played through SoCal from that age until she was 18. She also was a four-year varsity letter at Foothill High School, during her time at Foothill they made it to CIF finals two years in a row. She then was recruited to play at Azusa Pacific University. She did play all four years but due to the unfortunate COVID 19 shutdown her last two seasons of water polo were cut short but she did end her water polo career as a Division II All-American First Team in 2021. She graduated after four years with a bachelor’s degree in Criminal Justice. She has been coaching children in water polo skills and development since she was in high school and she has been coaching children on how to swim as well as proper swim techniques since she was around 13 years old. She has been a Patriot coach since she graduated college in 2021, she was also the assistant coach for the Beckman Varsity Women’s Team during the 2021 water polo season.

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HEAD COACHKELSEY STUMM

HS Girls

Coach Kelsey Stumm was born in Long Beach, California. She was raised in Tustin California. She started playing water polo when she  was 14 years old. She played varsity water polo/ swim all 4 years at Tustin High School. Kelsey was the captain her senior year of high school. She went to Fullerton Junior College and played 2 years there. She was noticed for many achievements during her time at Fullerton Junior College including being an All American 2 years in a row. Then transferred to Concordia University, Irvine where she played for one year. Graduated in 2016 with a Bachelors in Liberal Studies, Child Development. After graduating Kelsey became an assistant coach at Concordia and still is today. She plans to finish her credential degree at Concordia to become a teacher.

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ROBERTO BARRERA

ASSISTANT COACHGAVIN SCOTT

HS Boys

Coach Gavin has many seasons of competitive water polo experience and training with SOCAL Water Polo including a national 16U gold medal in the Junior Olympics. His coaching experience includes coaching at his high school alma mater Foothill High School in Tustin.  He lead his team to win the DII CIF Title and he was awarded the honor of being named DII Southern Section CIF Player of the Year in 2015.  As a collegiate athlete, he played with the Pepperdine Waves. This is his third year of coaching. Two were official assistant coaching jobs and the other was back to back summers assisting.

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