Aquatics Director & Head Coach - Sean Quackenbush

Sean Quackenbush is an accomplished and experienced athlete and coach. As a teenager, Sean was the Minnesota High School State Champion in the 100 yard butterfly. He was a three-time Big Ten Champion at the University of Minnesota, winning titles in the 100 butterfly, 200 butterfly, and 400 medley relay and breaking several Big Ten records. Sean is a 12-time All-American and a University of Minnesota Swimming Hall of Fame inductee. Sean was named to the USA National Swim Team and swam in the US Olympic Trials, World Cup Games, and the US Open, where he was a Gold & Silver medalist.

In addition to being a highly decorated swimmer, Sean is also an accomplished coach and leader. In Minnesota, he coached both high school and summer rec teams. Following his competitive career, he was an Assistant Coach for the Division 1 swim program at Michigan State University. He holds a MS in Sport Psychology from MSU and has hosted dozens of swim clinics and taught private lessons for swimmers of all ages. In 2015, Sean took over as Head Coach at Gehringer Park Swim Team in Concord. He helped grow the program and triple the number of Contra Costa County Qualifiers from the prior year, leading the team to improve their standings in the County meet by 20 places. Sean has recently left his corporate position at Kaiser Foundation Research Institute to follow his heart. Sean is passionate about transforming good swimmers to become great swimmers. But he also believes that swimming teaches important life lessons like working hard, setting and striving for goals, competing, and forming friendships that last a lifetime. Sean lives in Concord with his wife Natasha and his two sons.

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Assistant Head Coach - Georgi Cappelletti 

Georgi Cappelletti has been with the HOX for 24 years; 14 as a swimmer and this will be her 10th year as a coach. Her accomplishments in the water include breaking multiple records: the HOX 13-14 50 breast team record, in addition to the 15-18 100 free record at County, Woodlands and VSA League Championships, which held for several years. She is still the current HOX team record holder in the 100 free.  Coach Georgi attended Monte Vista High School in Alamo and was a member of both the Varsity Swim Team and the Varsity Water Polo Team. During her senior year of high school, Georgi’s 200 free relay broke the meet record at NCS.  She went on to play Division 1 Water Polo for two years at University of California, Berkeley and graduated in 2011.

She loved growing up on the Blackhawk pool deck because of the fond memories created, life-long friendships formed, and personal goals achieved. It is her desire to create that same experience for every HOX swimmer she coaches. Georgi brings a tremendous level of dedication and spirit to the team, and leads the Hike to Hawk during Spirit Week each summer. She loves coaching kids of all ages, but her specialty is leading the 8 and Unders and instilling a foundation for a long-term commitment to swim and love for the team. She completed her teaching credential in December 2013 and has worked at Tassajara Hills Elementary School since 2014.

Coach Georgi's contact:


Assistant Coach - Melissa Keao

Aloha HOX Families! I am excited for another summer at the HOX pool! I am originally from Kaneohe, Hawaii, I started swimming competitively at the age of 5 and continued through high school. I moved to Southern California to attend Whittier College. My favorite swim event was the 100 Breaststroke and 200 Breaststroke. I swam and played water polo throughout college while receiving my BS in Kinesiology with an emphasis in Physical Education. After graduation, I attended California State University, Long Beach and received my Single Subject Credential for Physical Education. From the age of 18 until present, I have held several jobs in the Aquatics field teaching swim lessons and managing swim school facilities. Currently, I teach Physical Education and am the Head Swimming/Diving Coach at Mission San Jose High School in Fremont. I love inspiring kids of all ages and abilities to learn to love and be safe in the water.

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Assistant Coach - Michelle McConnell

 I am very excited to be a part of the HOX Coaching Staff, coaching the 8 and under age groups as well as the mini HOX this season at Blackhawk.  I grew up in Concord, and graduated from Ygnacio Valley High School.  In high school I played waterpolo, basketball, and was a member of the swim team.  I was the first athlete in the history of my high school to receive 12 varsity letters for the sports in which I played, and in 2015 was inducted into the Ygnacio Valley High School Athletic Hall of Fame. Upon graduating high school I attended Brigham Young University where I received my Bachelor of Science Degree in Physical Education Teaching, Kindergarten through 12th grade and a minor in Spanish. I returned to Ygnacio Valley High School to teach Physical Education for two years before returning to school to receive my Masters of Arts Degree in Education, with an emphasis in Athletes and Academic Achievement from the University of California, Berkeley. This is my 12th year teaching in the San Ramon Valley School District. I taught Physical Education, and was the Assistant Athletic Director at Monte Vista High School two years before coming to teach Elementary PE at Creekside.  I have over fifteen years of swim coaching experience coaching at Ygnacio Wood Swim Team, Valley Vista Swim Team and Roundhill Swim Team.  I love the sport, and hope to help my swimmers have the same passion for it that I do.  

I am married to Jason McConnell, and we have a 10 year old daughter named Mia, and 4 year old son William.  I am looking forward to a great summer at Blackhawk.  Go HOX!


Assistant Coach - Alex Aqua

Alex Aqua is in her third summer as an Assistant coach for the HOX. Before coming to the HOX swim team, she swam for the Clubsport Tidal Waves as a young child. Alex played multiples sports growing up but fell in love with softball. She attended Valley Christian High School where she played softball, lettering Varsity all four years. She continued her softball career in college where she was chosen the first team all conference player Freshman and Sophomore year hitting 18 home runs. Coach Alex is in her final semester of school earning her Bachelor’s Degree double majoring in Marketing and Communications from Holy Names University.

On the pool deck coach Alex has great enthusiasm and energy! She loves watching swimmers improve throughout the year and sharing her enthusiasm of the sport.  She specializes in the 10 & under age group with strokes and prides herself in making sure each swimmer has confidence.  She hopes to enhance their leadership skills and work ethic to create well rounded individuals on and off the pool deck.
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Assistant Coach (Winter & Spring) - Nikki Palmer

Hi, my name is Nikki Palmer and I recently graduated from the University of Tampa where I majored in International Business- Management. I swam collegiately at the University of Tampa where I specialized in sprint freestyle and backstroke, as well as 100 and 200 fly. I started swimming locally with New Wave Aquatics at eight years old and I coached Dana Hills Swim Team for numerous years. I swam for the Oakhurst Orcas and Dana Hills Otters while I grew up in Clayton.   I attended Carondelet High School where I was a four year NCS qualifier and NCS 400 free relay record holder. My junior year of high school I decided I was going to focus more on swim and joined the Walnut Creek Aquabears. I was a scholar athlete at the University of Tampa and got the privilege of participating on two consecutive Sunshine State Swimming Conference champion teams. My hobbies include going to SoulCycle, skiing, swimming, reading, event planning, and traveling. I have a passion for coaching and watching the improvement and advancement of swimmers of all levels! Best, Nikki

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Assistant Coach - Will Vogeley

Hi my name is Will Vogeley. I graduated in 2017 from Monte Vista High School where I was a varsity swimmer and water polo player. I’m currently studying at Indiana University’s Kelley School of Business where I’m also a member of the water polo team. I started swimming for the HOX in 2004 and was lucky enough to graduate last summer as a swimmer. Last year I enjoyed coaching for the HOX during Spring Clinic and I’m excited to continue to coach this summer. I look forward to supporting the HOX tradition of greatness!

Coach Will's contact: