Personal
- Parents and Joseph and Heather Gillespie
- Mom played softball at George Mason and father played lacrosse at George Mason
- Has three younger brothers (Jack, Josh and Eli)
- Also recruited by Virginia, Columbia, Yale, Cornell, Brown and Syracuse
- Majoring in Geography: Geospatial Intelligence
Before BYU
- Holds school records in batting average (.548), on-base percentage (.641), home runs (12) and stolen bases (42)
- Two-time first team all-state (2023, 2021)
- Three-time first team all-district, all-region and all-county (2023, 2022, 2021)
- 2022 VHSL Cedar Run district runner-up
- 2022 Team Offensive, Defensive and Overall MVP
- 2021 VHSL Potomac 5C district & region champion
- 2021 VHSL Class 5 State runner-up
- Member of both the Math and Science National Honor Society
- Three-time academic letter and principal's list honoree
- Played travel ball with VA Glory under Suzy Willemssen