But what happened to the track and field athlete? · shelby daniele tragically passed away, and her school announced the news. Shelby daniele, 23, passed away on , after suffering a brain aneurysm. The 23-year-old athlete’s death occurred on september 25. · former cal poly track and field star shelby daniele reportedly died from a brain aneurysm, according to a report on wednesday. Completely heartbreaking,” brandenburg shared. She was a record-breaking athlete and a leader on the cal poly track and field team, who recently earned her masters degree in agriculture. Former cal poly track and field star shelby daniele died from a brain aneurysm at the age of 23, it has emerged. · “the young lady that was the driving force in evas decision to run track at cal poly, shelby daniele , passed away last night of a brain aneurysm. Danieles cause of death was revealed last week by the father of a fellow athlete attending the california ncaa division i school, brian brandenburg, in a facebook post last week. Former cal poly track and field star shelby daniele tragically passed away from a brain aneurysm , according to reports. · former cal poly track and field star shelby daniele reportedly died from a brain aneurysm following the 23-year-old stand-out athlete’s death on wednesday. Daniele, who broke cal polys indoor 200m record last year with a time of 24. 69.