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ASU Hockey Prospect Collapses After Outdoor Workout, Reporting Reveals Possible Protocol Failures

New eyewitness accounts and family attorneys say delayed cooling and use of an unvetted outside trainer raise urgent questions that could reshape the university review and law enforcement probe.

Overview

  • A 21-year-old Arizona State defenseman collapsed during a preseason outdoor workout on Aug. 20 and has remained hospitalized in critical condition with family attorneys saying his prognosis is extremely poor.
  • Multiple witnesses told reporters the player showed disorientation during drills, collapsed during a final relay, stayed in the sun for minutes before teammates moved him to shade, and on-field care consisted mainly of water, towels and an ice pack.
  • Emergency responders were dispatched after the collapse and Tempe Fire Medical Rescue arrived at the stadium at about 8:31 a.m., according to reporting based on emergency logs.
  • Reporting says the workout was led by former Green Beret Tim Ziesel under a handshake agreement that appears to have bypassed ASU’s consultant vetting and the program’s required heat‑acclimatization and treatment protocols, including immediate cold‑water immersion.
  • ASU has opened an internal review led by university leaders while the ASU Police Department probes the incident; the family is pressing for an independent external investigation as the program, players and the Oct. 2 season opener face heightened scrutiny.