Hard to believe people still spout this BS.
Standout Newbury Park High School Performances under Sean Brosnan
(excluding Young and Sahlman siblings)
(2022 results include results officially coached by his wife where he wrote the workouts)
Girls 4xMile Relay - National Record
Performance: 19:48.58
Athletes: Samantha McDonnell, Ailish Hawkins, Bella Chittenden, and Morgan Nygren
Meet: New Balance Nationals Outdoor (June 18, 2022)
Daniel Appleford
3200m: 8:46.43 at the Arcadia Invitational (April 9, 2022)
5k Cross Country: 14:19.46 at the Garmin RunningLane Cross Country Championships (December 4, 2021)
Jace Aschbrenner
3200m: 8:44.93 at a Time Trial during Pandemic (May 23, 2020)
5k Cross Country: 14:26 at the Woodbridge Cross Country Classic (September 21, 2019)
Aaron Cantu
3200m: 8:57.62 at the APU Meet of Champions (March 19, 2022)
Dev Doshi
3200m: 9:02.13 at the CIF-SS Division 1 Finals (June 5, 2021)
5k Cross Country: 14:59.51 at the Garmin RunningLane Cross Country Championships (December 4, 2021)
Isabella Fauria
800m: 2:10.96 at the Dublin Distance Fiesta (March 16, 2019)
1600m: 4:55.77 at the Azusa Meet of Champions (March 23, 2019)
Nicholas Goldstein
3200m: 8:59.19 at the Marmonte League Finals (April 29, 2021)
5k Cross Country: 14:31.91 at the Garmin RunningLane Cross Country Championships (December 4, 2021)
Ailish Hawkins
3200m: 10:20.10 at the Arcadia Invitational (April 8, 2022)
Hector Martinez
5k Cross Country: 14:52.72 at the Garmin RunningLane Cross Country Championships (December 4, 2021)
Samantha McDonnell
Mile: 4:38.93 at the Brooks PR Invitational (June 15, 2022)
800m: 2:08.06 at the Azusa Meet of Champions (March 26, 2022)
Brayden Seymour
Mile: 4:06.66 at the Brooks PR Invitational (June 15, 2022)
Garmin RunningLane Cross Country Championships
Top 7 boys under 15:00
There are other standout times, but these should cover most of the top performances.