2012 LAC Partners & Links
Coaching Staff and Board

Coaching Staff

Alex Silver

Head Coach/CEO


 Alex has been coaching swimming since 1999.  From 2005-2007 he was the Associate Head Coach with the Oakland Undercurrents, where he was instrumental in helping the team grow to over 150 swimmers, including Junior Olympic and Far Western Champions, and Oakland City League Record Holders.  While working in Oakland, Alex was a volunteer assitant coach for the UC Berkeley Men's Swim Team.  Alex also served as Head Coach of Montgomery High School, where he coached a National Record Holder, and as assistant coach with the Santa Rosa Neptunes.  Alex has been Head Coach of LAC since 2008.  In 2010 he was one of 10 coaches nationally to be selected into the American Swim Coaches Association Fellows program.  Alex has had the opportunity to coach JO Champions, Far Western Champions, Junior National Finalists and an Olympic Trial finalist at LAC.  LAC has consistently been in the top 10% of teams in Pacific Swimming when rated on number of National Qualifiers per swimmer.  Alex has achieved American Swim Coaches Level 5 accreditation in both Achievement and Education. This puts him in the top 1% of coaches in the USA according to ASCA.  In 2019 Alex became a National Team Coach. Alex also has International and Collegiate coaching experience as a coach at Plivaj's Najobli Swim Camps in Croatia  
As an age-group swimmer for the Neptunes, Alex was a Far Western Champion and nationally ranked swimmer.  At UC Berkeley, Alex was the Captain of the 1999 4th ranked men's team, was a Pac-10 Finalist and NCAA qualifier, was ranked 11th in the Nation and 50th in the world in the 400 I.M., and competed at the 2000 U. S. Olympic Trials.  Alex lives with his wife Genii and their sons Ari, Isaiah and Sayer in Livermore.  He feels extremely fortunate to have such a talented and dedicated coaching staff to work with at LAC.  

Lisa White

Associate Head Coach


     Lisa has been coaching on LAC since 2010. She has coached JO Champions and Far Western finalists, Pacific All-Stars, and the developing athlete. In 2018 Lisa was nominated for USA Swimming's Age Group Coach of the Year after having coached 2 swimmers to several USA top 10 performances. Lisa's passion is to use swimming to help each individual grow to their fullest potential; she inspires young athletes to excel in and out of the water. Lisa is highly skilled at coaching the Pre Comp through Senior Elite athlete and is able to challenge athletes while seeing them for the unique human beings they are. 

As an athlete, Lisa swam for the University of California, Davis. She was a 3-year captain, NCAA D2 Qualifier, and a Top 10 Times swimmer. As an adult athlete she is a 2 time Masters Champion and an Ironman Triathlon finisher. Lisa currently lives in Livermore with her husband and 2 boys.

Theresa Davis

Head Age Group Coach


Coach Theresa works with the pre-comp and novice swimmers.  She was a scholar athlete in high school excelling in both Volleyball and Softball and is a life long recreational swimmer, with a passion for the water.  At the age of 16, she was certified as a scuba diver and this lead to her desire to study marine biology at UCSC. She became a certified research and rescue scuba diver landing her a job that required her to swim in rivers all over northern California counting salmon. 
She'll never forget her first day on the job where she got to swim with Salmon that were about as big as her and being able to reach out and touch them. 
With her love for working with children and 16 years of teaching/coaching experience, she brings vast amounts of skills and knowledge to our developmental swimmers. Not having the opportunity as a child to swim competitively, she has now joined the USA Masters and enjoys the sport while sharpening her techniques. Being an active swimmer and an experienced coach, she knows the best methods in helping her swimmers improve and be great at swimming. That dynamic combination is where her groups benefit and many advance to become better athletes. She loves being a mom and watches her children swim and grow at LAC.

Rich Ellis

Junior Varsity Coach


Rich has been coaching with LAC since 2013. Rich has a Phd in Psychology and has been instrumental in some of our mental training practices. He is  a retired forensic psychologist for the US Department of Justice and has experience as a hostage negotiator, profiler and Special Operations Team member. After playing football at a top five college program Rich got into swimming, cycling and running. Rich competed in Iron Man competitions and other triathlons always finishing in the top 10 ten. Rich has a love of competition and coaching combining the two into his LAC coaching sessions. Rich has a passion for kids and is able to instil a sense of confidence in each child while challenging him or her at the appropriate level.   

Alex Hamza

Varsity Coach


Alex has been coaching with LAC since 2014.  He is and has been an avid masters swimmer for over 30 years. His daughters, Haley and Gabi, swam in the LAC program and Haley swam for the UC San Diego swimming and diving team, setting the school record in the 1650. His wife, Wendy, can be found swimming at Masters workouts as well.  He is a scientist with LLNL in the fields of materials science and surface science. Currently, he is learning about the applications of 3D printing. Alex has been instrumental in building our Varsity group to the point where they consistently place athletes at the NCS championships. He also has experience coaching the Senior Elite group. In 2021, Alex will be heading to Omaha to coach at his first Olympic Trials. 

Kristin Waltner



Kristin began coaching swimming in 1995, during the summers home from college. Kristin was both an assistant and head coach for the Dewing Park Seahorses in Walnut Creek during the 1995- 1998 summer seasons. She then continued her summer coaching with Round Hill Country Club in Alamo from 1998- 2005. The team won the championships twice.  She also spent several fall seasons as an assistant coach for the Fall Rec program, both through Round Hill and SRVLA. Kristin became an assistant coach for the varsity swim team at Liberty High School in Brentwood in 2005 and continued that role through the 2009 season.  Kristin even has a passion for coaching basketball! She coached both the 7th and 8th grade girls and boys teams from 2003- 2007 at the middle school she taught at.
As an age group swimmer for both SRVLA (1989- 1992) and WCAB (1992- 1994), Kristin was a Far Western Champion, MVP All- Star for Western Zones, and was a Jr. and Sr. National qualifier. Her events included the 100/200 breast, 200/400 IM. Kristin swam for Carondelet High School and competed top 8 at NCS in several events all 4 years (200 IM, 100 breast, 500 free, 200 free, 200 MR, 400 FR). She earned a scholarship for swimming to Colorado State University in Ft. Collins. At Colorado State, Kristin had the opportunity to meet and swim with Olympian Amy Van Dyken, won the All-WAC Academic Athletic Award 3 years in a row, was a top- 6 finalist in the 200 IM, 400 IM, 200 Breast at the WAC Championships all 4 years, and was a WAC champion her sophomore year when the Rams edged out BYU. 
Kristin lives in Livermore with her husband Eli, son Alexander, and step-daughter Ashlyn. She is beginning her 18th year of teaching this year. Kristin is currently teaching 8th grade U.S. History and 7th grade World History at Wells Middle School for the Dublin Unified School District. While she officially "retired" from swimming in 1998, Kristin still remains very active and is a Peloton junkie- enjoying everything from running to biking to bootcamps. She is very excited to have the opportunity to coach swimming again and believes that swimming gives children life-long skills such as perseverance and confidence.

Scott Hartz



Scott has been coaching swimming for three years and was a competitive swimmer for over ten. Scott specializes in early to intermediate stroke development as well as endurance and sprint training. He strives to maintain a fun, yet challenging, atmosphere for his swimmers, boosting both their confidence and ability. Prior to coaching, Scott worked in the gaming industry for over a decade with companies such as EA and Namco Bandai. Scott is also a member of the Yale Alumni Schools Committee and has the privilege of interviewing and evaluating Yale applicants in the Tri-Valley area.
As a swimmer for the Santa Rosa Neptunes, Scott set numerous pool and team records, was Far Westerns champion, and competed at multiple Junior National events. Scott was also fortunate enough to swim for Yale University achieving the team's fastest 400 IM time his freshman year. Scott and his wife have been together since meeting through high school swimming and currently live in Livermore with their two girls.