Sienna Castillo Sienna Castillo 6'1" | MB/RS Redondo Union | 2027 State CA hit .389 with seven kills, served an ace and added seven block assists, including a huge block on the outside hitter. She is quick on the one and turns the ball across her body for the kill. She gives herself room to work her angles or slows down with a soft tip over the block. She will bring this skill set to the sand at Cal Poly Beach.

~ Michelle Bamford @Coachable247

I had Sienna on my 2025 Division 1 Players to Watch list as a middle and right side. She has since committed to Cal Poly San Luis Obispo for beach volleyball. Her answer is clean and coach-friendly: trust the work and enjoy the teammates around her.

Sienna’s Voice “My personal goal for Saturday is to give everything I have, trust the work we’ve put in and enjoy every moment with my teammates. We’ve worked so hard to get to this point and I want to leave it all on the court. It means so much to have the opportunity to compete for a CIF title and I’m really proud of our team and excited to see what we can accomplish together.”

~ Michelle Bamford @Coachable247

Sienna Castillo Sienna Castillo 6'1" | MB/RS Redondo Union | 2027 State CA made the most of her showcase opportunity, using each drill to refine her timing and execution. She carried that work into six-on-six play, where she delivered a solo block against a back-row attack, one of her proudest moments. Her ability to stay locked in through both training and live play shows her readiness to translate skill work into game situations.

What stood out most to Sienna was how engaged and supportive the college coaches were, both on the court and during recruiting discussions. Their encouragement and insight into the June 15 timeline gave her confidence and clarity about what’s ahead. The experience helped her define what matters most in a college program, competitive energy, team connection, and coaches who are actively involved in player development. Her advice to future athletes: “Go in with a positive attitude and be ready to learn. Give it your all and be open to feedback. Most of all, have fun and enjoy the experience.” ~ Michelle Bamford @Coachable247