U13 Blue
Cassie Jenson
Head CoachCoach Cassie brings 5 years of coaching experience, primarily at the middle school level, where she has coached both boys and girls across multiple seasons. She has experience working with athletes at a variety of skill levels and loves helping players develop their technical skills, confidence, competitiveness, and love for the game.
Cassie’s own volleyball journey began in 3rd grade and continued through high school, club volleyball, college intramurals, and adult recreational leagues.
Her coaching philosophy is centered around developing the whole athlete. Cassie believes athletes grow best when they feel supported, challenged, and trusted to push outside their comfort zones. She strives to create a positive and competitive environment where players are held to high standards while still having fun, taking risks, learning from mistakes, and building confidence, resilience, accountability, and teamwork.
What Cassie loves most about Oly Reign:
“I love the positive community at Oly Reign. From day one, it has felt like a family, and I feel incredibly lucky to be a part of it. I love that athletes are supported and motivated to be their best while also being given the tools, coaching, and encouragement to get there. The culture makes it a place where athletes can grow, compete, and genuinely enjoy being part of a team.”
Outside of volleyball, Cassie loves hiking, backpacking, camping, paddle boarding, running, working out, traveling, playing sports, exploring new places, and spending time with friends and family.
Savannah Sleasman
Assistant CoachCoach Savannah brings three years of coaching experience to Oly Reign, including a season with Northwest Juniors and two seasons coaching at Tumwater High School—one with JV and one with C-Team.
A Tumwater High School alum, Savannah played three years of varsity volleyball and was part of a State Championship team. She continued her playing career at Bellevue College, where she earned North Region First Team honors twice and was selected to the Sophomore All-Star Team.
As a former player, Savannah is passionate about creating the kind of team environment where athletes feel supported, confident, and excited to compete. She focuses on building strong relationships, bringing energy to every practice, and helping athletes believe in themselves and their teammates. Her goal is to develop better volleyball players while also teaching confidence, accountability, and what it means to be a great teammate.
Savannah loves Oly Reign’s strong sense of community and the resources available to help athletes grow both on and off the court. She’s excited to be part of a program surrounded by great coaches and so many opportunities for athletes to develop.
Outside of volleyball, Savannah enjoys cooking, being on the water, hiking and mountain adventures, spending time with friends and family, and hanging out with her kitties.
Callie Mickelson
Coaching InternCallie is beginning her coaching journey this season after gaining experience working with athletes at volleyball camps. As a coaching intern, she’ll have the opportunity to learn alongside our coaching staff while sharing her own playing experience and passion for the game with our U13 Blue athletes.
Callie has played three years of club volleyball, including two seasons with Oly Reign. Her experience as a Reign athlete gives her a unique perspective as she transitions from player to coach and begins developing the next generation of athletes.
Callie’s coaching philosophy:
“I want to make athletes feel confident and grow with themselves!”
What Callie loves most about Oly Reign:
“I love the family aspect the teams create.”
Outside of volleyball, Callie loves hiking, playing soccer, competing in summer volleyball tournaments, and spending as much time outdoors as possible.