Coaches and Directors

Coaches and Directors
Coaching Staff
Olga Splichalova Espinosa CEO & Head Coach & Coach - Seniors (S)

Olga is the founder of St. Croix Swim Club. She has been with the club since it was formed in 2000 and started with 10 swimmers. In 2016, Olga was named Chief Executive Officer for St. Croix Swim Club. In addition to overseeing all levels of swimming in St Croix Swim Club, she is the lead coach of the Senior group and is responsible for all wet-side club operations and leads the dry-side as well. Prior to coaching at SCSC, Olga worked with Edina Gators and Park Center High School as a head coach for two years. She has coached Para Olympian and World bronze medalist Summer Schmit, Olympic Trial qualifiers and Junior National Champions.

Olga is actively involved with MN swimming and also with USA swimming. She is currently serving on USA Swimming Age Group and Senior committees.

“M” club Hall of Fame and U of Minnesota Aquatics Hall of Fame, Espinosa earned seven All-America honors during her career at Minnesota and was a five-time individual All-American. At the time of her graduation, her five individual All-America medals were the most in school history. She captured three Big Ten titles during her collegiate career, winning both the 500 free and 1650 free in 1996, and repeating as the 500 free champion in 1997. Espinosa also was an 11-year member of the Czech National Team, European Champion in open water, Czech National record holder. Olga competed in the 1992 (finishing in 6th place) and 1996 Olympics.

She is married, has two children and lives in St. Paul. Olga's daughter Izzy and son Lucien are part of SCSC.

Judith Lallier Group Coach - Juniors (J)

Judy started her swim career when she was 7 ½ years old.  She totally fell in love with the sport.  From there, Judy worked hard and qualified for her first National Championship Meet at age 13 in the 200 Breaststroke.  Judy became a consistent top eight national finisher in the 200 IM plus a top finisher at the Olympic Trials.  Judy was offered a full scholarship and swam for the University of Florida.  She competed on USA National Teams in Moscow, Leningrad, Stockholm, Paris, East Berlin and London.  Judy went on to a rewarding Masters career including over 20 National titles.  She holds many current State titles and at one point, held World Records in the 100 and 200 Backstroke and 200 IM. Judy coached swim teams in Alaska for 10 years and has been coaching in Minnesota for the past 3 years.  Judy joined St. Croix Swim Club in 2017.

Marybeth Rosell Group Coach - Blue Rays (BR)

Marybeth has been a member of the St. Croix Swim Club coaching staff since 2001. Marybeth grew up in Little Rock, Arkansas, and attended Southern Methodist University on a swim scholarship. Marybeth moved to Minnesota in 1993 and began teaching Red Cross swimming lessons at the River Valley Athletic Club in Stillwater. She continues to teach both group and private lessons at River Valley which helps recruit swimmers for SCSC. She is a mother of three boys, Adam, Connor and Brennan who were all accomplished SCSC swimmers.  Marybeth still swims in a masters swim program.

Bryce White Group Coach - Silver Rays (SR)

Bryce comes from a long history of competitive swimming beginning in her youth and concluding with her competing for Hamline University in college. Growing up in Sun Prairie, Wisconsin, she competed on the varsity swim team her four years there. Moving not-to-far from home, she attended Hamline University. There, she swam competitively while majoring in Women’s and Gender Studies and minoring in Social Justice. Since graduating in 2020, she has spent more time coaching with St Croix, instructing most of the time with the Silver Ray group. She also obtained a Yoga Teacher Certification and a Sports and Exercise Science Certification in 2021.

She is a certified USA Swimming Coach and has been coaching with St Croix Swim Club for the last five years.

Dennis Dadashev Assistant Coach

Dennis grew up in Minnetonka and started swimming at the age of 8. He started swimming for Aquajets at age 10 and swam for Hopkins High School. He attended UW-River Falls, where he graduated in 2017, and majored in Political Science.  Dennis swam for UWRF for a year and was a finalist at the WIAC conference meet as a freshman in individual events along with breaking the school record in the 400 Medley Relay. Unfortunately, the program was cut after his freshmen year. Dennis searched for something to fill the void.  He joined the coaching staff at River Falls High School as an assistant for the boys team. After one season as the boys assistant, Dennis was named the Head Coach for the girls swim team from 2015-2017. After joining SCSC in the fall of 2017, Dennis briefly left SCSC to attend graduate school at the University of Kansas from 2018-2019 where he served as a Volunteer Assistant with the Womens program and graduated with his Masters of Public Administration in 2020. Dennis is also currently the Head Coach for the Hudson Girls High School Swim Team. In his spare time, he is an avid Minnesota Timberwolves fan and loves to bake bread.

Dianna Johnson Assistant Coach

Coach Dianna started with St Croix in the Spring of 2014 and has been an assistant coach for all of the SCSC program levels. She started her coaching career in the Spring of 2008 with Barracuda Aquatics Club as the Lead Developmental Coach and has coached at two other clubs since. She mostly coached the 6-12 year old age range. She has coached kids from Developmental Level to Age Group State and her main focus is technique, kicking and having fun. Her favorite thing about coaching is seeing the kids grow not only as swimmers but as all around people. It's great to see the light bulb go off after the kids have figured out something that has been challenging for them and seeing the hard work pay off. 

Coach Dianna grew up in Jordan, MN and swam for Barracuada Aquatics Club for two years; this was due to there being no local high school programs. She attended Minnesota State University, Mankato after high school to study Mechanical Engineering and Mathematics. While at Mankato, Dianna swim Distance Freestyle and Backstroke. She placed in the Top 16 of the NCC Conference for the 1,650yd Freestyle and 200yd Backstroke in 2005-06 and 2006-07, and was a two year letter winner. She was also voted the Mavericks "Most Imporoved Swimmer" three seasons in a row, 2003-04, 2004-05, and 2005-06. Coach Dianna also served as Co-Captain and recieved the Maverick Achievement Award for Senior Student-Athlete Excellence in 2006-07. 

While not on the pool deck, Coach Dianna is a Sr Design Engineer. In her free time she loves spending time with dog Dozer, being outdoors hunting, fishing or hiking. She also attends many Minnesota sporting events with friends and family. Her favortie events are the 1,650yd freestyle and 200yd backstroke. She now enjoys both open and pool competitions as well as marathons and triathlons to mix things up a bit.

Sandy Whitaker Assistant Coach

Sandy grew up in Westerville, Ohio. He attended and swam for St. Charles Preparatory High School. He went on to attend the University of Minnesota – Twin Cities, majoring in Economics and minoring in Mathematics. Sandy swam for the Golden Gophers for his four years there. After graduating, Sandy secured a full time position in the Minneapolis-Fridley area and is currently a Project Manager. Recently, Sandy completed EMT training and received his EMT certification. He is a Head Coach at Central High School for girls and a part-time assistant coach for the boys swim team.  Coach Sandy started coaching with SCSC in September of 2018.

Macian Campbell Assistant Coach

Macian grew up in Stillwater, MN and began swimming for St. Croix Swimming at age 9. He then moved to STAR swimming in St. Paul and then Aquajets in Eden Prairie before returning to St. Croix as a high school junior. He then swam for the University of North Dakota in Grand Forks swimming the 400 IM and 200 butterfly or any other events that needed to be filled. He also spent time as an age group coach for the Wahoo Swim Club.

After graduation he went to Navy Officer Candidate School in Newport, RI and was commissioned as an officer in the US Navy. He spent the next 5 years sailing out of Norfolk, Virginia completing 3 deployments to Europe and the Middle East and 2 hurricane relief missions to the Caribbean. Mac is now on shore duty working as an NROTC instructor at the University of Minnesota and finishing his Masters in Human Rights.

When not teaching he enjoys spending time with his fiance, Katy, and their dog Gale.

Lee Roback Assistant Coach

Lee is a swimmer out of Memorial High School in Eau Claire Wi. Swam at Hamline University 2019-21 with coach Bryce, Greg and being coached by Dennis D. Lee coaches boys team at Central High School with coach Sandy.

The most important part of swimming is to start where you are but don’t stay there. Having such a large improvement in my own swimming allows me to see that all swim are capable of pushing past being in the slow lane. “It’s not if, it’s when.”

Lee still enjoys swimming and competition through MN masters swimming, has a tabby cat named Moe of one year. He is a St Paul educator in 5-12 social studies and currently preparing to student teacher.

Hannah Dettman Assistant Coach

Hannah has been apart of the SCSC swim team since 2010. She swam on the Stillwater High School swim team under the direction of Coach Brian Luke. She graduated from Stillwater Area High School and committed to San Jose State University to continue her swim career. She competed in the 200 IM, 400 IM, and 200 Fly. She made the Dean’s list as a Psychology major for having a GPA over 3.5 both semesters. She is now a Sophomore and will be continuing her education at the University of Denver and studying Socio-legal Studies and Psychology. Hannah will be coaching with SCSC when she is on breaks from college over the holidays and in the summer.

Spencer Rodriguez Assistant Coach

Spencer is a true MN girl who loves all things outdoor, especially if it involves her Jeep Wrangler. She loves cuddling up with my latest mystery thriller book, a cup of cowboy coffee & be in awe of this beautiful planet. When she is not globe-trotting with her boyfriend, you can find her cuddled up with my Persian kitties, Elle Woods & Jean Grey, most likely watching some reality TV show or planning DIY projects. SKOL VIKES! Spencer swam for the University at Buffalo New York 2011-2015 & had a wonderful collegiate swimming experience. I trained mainly distance and my favorite event was the 400 IM. She also coached for Edina Swim Club. She loves everything about swimming from the life long friendships to the smell of chlorine the morning of a swim meet.

Gabriella Houck Assistant Coach

Gabriella was born and raised in Stillwater, MN. She started her swimming journey at a very young age with coach Mary Beth, and continued to learn from her and coach Tara up through high school. Gabriella’s love for teaching goes far beyond the pool. She is also a certified ISI figure skating coach, teaching many skaters in the St. Croix valley. She strives to uplift young athletes and promote a positive atmosphere for the development of confidence and character in sports, as well as other areas of life. She believes that helping an athlete find success is just as rewarding as accomplishing her own goals.

Outside of sports, Gabriella continues to pursue her career as a hairstylist. When she’s not working, she loves to take on any activity where she can express her creativity.

Board of Directors
Charles Vazac President (2022-2024)
Mike Biebl Vice-President (2022-2024)
Melissa Sewick Secretary (2021-2023)
Mike Christianson Treasurer (2021-2023)
Jessica Mathiason Member at large, 2 year (2022-2024)
Beth Harrison Member at large, 1 year (2022-2023)