Prior to Stanford
- 2024 graduate of Redondo Union High School in Redondo Beach, Calif.
- Helped his team to a playoff appearance as a junior (2023)
- Junior class most outstanding baseball player (2023)
- Three-time class Athlete of the Year (2021-23)
- All-Bay League (2023)
- Perfect Game Preseason All-America CA Region second team (2024)
- Perfect Game Preseason Underclass All-America CA Region honorable mention (2023)
- Ranked the No. 39 shortstop in California according to Perfect Game
- Played with TB SoCal on the travel baseball circuit
- Also competed in football where he was a three-time All-Bay League selection and was named All-Area and All-CIF as a junior (2023)
Personal
- Son of Kathy and Craig Stiveson
- Father, Craig, pitched for Pepperdine and was named all-conference, Freshman All-America, and West Coast Conference Freshman of the Year while being drafted out of high school by the Dodgers and the Expos out of college
- Has one sister, Cammy
- Grandfather, James, played football at Stanford
- Uncle, Eric, played football and basketball at Cal Poly