Career Highlights
- NCAA Champion (2021, lacrosse)
- Two-time USILA Second Team All-American (2022, 2024)
- USILA All-America honorable mention (2023)
- Two-time Inside Lacrosse Second Team All-American (2022, 2024)
- Inside Lacrosse All-America honorable mention (2023)
- Two-time USA Lacrosse Third Team All-American (2023, 2024)
- ACC Defensive Player of the Year (2022)
- Two-time Tewaaraton Award nominee (2022, 2024)
- All-ACC (2023, 2024)
- USILA Scholar All-American (2024)
- CSC Academic All-District (2023)
- Concluded his career third all-time in career caused turnovers (95)
- Started in all four NCAA Tournament games amid UVA’s 2021 national championship run
- Selected eighth in the fourth round by the California Redwoods in the 2024 PLL College Draft
As a Senior (2024, at Virginia):
- USILA Second Team All-American
- Inside Lacrosse Second Team All-American
- USA Lacrosse Third Team All-American
- All-ACC Team
- Tewaaraton Award nominee
- USILA Scholar All-American
- Team captain
- Tied his career high of five caused turnovers in 13-10 comeback win at No. 16 Harvard (March 30)
- USA Lacrosse Magazine Preseason Second Team All-American
- Inside Lacrosse Preseason First Team All-American
- USILA Preseason First Team All-American
- Preseason All-ACC Team Selection
As a Junior (2023, at Virginia):
- USILA All-American Honorable Mention (May 25)
- All-ACC selection (May 9)
- Inside Lacrosse Honorable Mention All-American (May 17)
- USA Lacrosse Magazine Third Team All-American (May 9)
- CSC Academic All-District (May 23)
- ACC Defensive Player of the Week (March 28)
- Tewaaraton Award Watch List
- Recorded a career-high six ground balls at No. 2 Duke (April 15)
- Inside Lacrosse Second Team Preseason All-American
- USA Lacrosse Magazine First Team Preseason All-American
- Preseason All-ACC Team
- Team captain
- Recipient of the 2023-24 T. Rodney Crowley Scholarship
- All-ACC Academic Team
- ACC Academic Honor Roll
As a Sophomore (2022, at Virginia)
- USILA Second Team All-American (May 26)
- Inside Lacrosse Second Team All-American (May 15)
- ACC Defensive Player of the Year (May 12). UVA’s first defenseman to garner ACC Player-of-the-Year honors since 2002
- All-ACC selection (May 12)
- USA Lacrosse Magazine Second Team All-American (May 10)
- VaSID Defensive Player of the Year & All-State Team (June 29)
- Appeared in 16 games, including 15 starts
- Finished the season with 29 ground balls and 32 caused turnovers
- His 32 caused turnovers led the ACC and were good for sixth in the nation and the most by a UVA player in a single season since 2017
- Recorded five ground balls and four caused turnovers in the NCAA Tournament
- Scored an unassisted goal against Lafayette (April 28)
- Tewaaraton Award nominee (April 21)
- Tewaaraton Foundation Watch List First Round Addition (March 10)
- ACC Defensive Player of the Week (March 15)
- ACC Defensive Player of the Week (March 8)
- Tallied a career-best five caused turnovers in Virginia’s 19-8 win over then-No. 14/15 Johns Hopkins (March 5)
- Also scored his first career goal against the Blue Jays
- Registered four caused turnovers in three of Virginia’s first four games
As a Freshman (2021, at Virginia)
- NCAA Champion
- Appeared in all 18 of UVA’s games with four starts
- Made all four starts in the NCAA Tournament
- Picked up 14 ground balls and caused seven turnovers
- Scored first career point on an assist at UNC
- Helped hold Georgetown’s Jake Carraway without a goal in the NCAA quarterfinal round, snapping the nation’s longest active goal-scoring streak at 44 games
HIGH SCHOOL
- Three-year starter in basketball
- MVP at the Martin Luther King Jr. Showcase at American Canyon
- Ten times named the Palo Alto Weekly Honorable Mention Athlete of the Week in basketball
- All-state second team (basketball)
- Led Bay Area with 17 double-doubles as a junior
- Averaged 17 points per game, 10 rebounds per game and three assists per game as a senior
- Norcal Sports TV All-Star game selection
- Team captain as a senior
- MVP of the West Bay Athletic League as a senior
- Three-year starter, two-time captain on lacrosse team
- First-team All-West Catholic Athletic League
- Adrenaline Lacrosse four-star recruit
- US Lacrosse All-American
- Earned seven letters in high school
PERSONAL
- Son of Anne and Eric Kastner
- Has two older half-brothers, Gage and Brett, and two older half-sisters, Krista and Abby
- Father, Eric, played football and rugby at Cal