Hometown: Hollister, CA
Previous School: Merced High School
College: Castillo is entering her first year playing golf for Simpson.
High School: Castillo played four years of varsity golf at Merced High School. She also played softball. She was on the all-academic team all four years and won Female Athlete of the Year honors her senior year. She played club softball for the California Grapettes and the Central California Krush.
Personal: Serina is the daughter of Jose and Ruby Castillo. She loves playing sports and spending time with family and friends.
Reason for coming to Simpson: "I came to Simpson to play golf and get an education."