Matthew Mayich, an Arizona State hockey defenseman and St. Louis Blues draft pick, remains hospitalized after collapsing during an outdoor team workout in Tempe, Arizona. The incident has prompted Arizona State University to review the circumstances surrounding the exercise.
Matthew Mayich Remains Hospitalized
Mayich was hospitalized after collapsing during an outdoor workout Thursday morning as Arizona State’s hockey program began its fall activities.
A person close to Mayich’s family confirmed that the defenseman remained hospitalized Tuesday. The individual spoke anonymously because they were not authorized to publicly discuss his medical condition.
Arizona State has not publicly identified the player involved, citing privacy concerns. However, Mayich’s status has been confirmed by a person close to his family.
The university said it is reviewing what happened during the workout and whether the exercise was conducted appropriately.
Arizona State Investigates Hockey Workout
Arizona State Vice President of Media Relations Chris Fiscus confirmed Tuesday that the university is examining the circumstances surrounding the incident.
According to the university, a student-athlete collapsed during an outdoor exercise Thursday morning and remained hospitalized. The school has not disclosed additional medical details about the player.
Fiscus also declined to say whether the workout had been formally sanctioned by the team.
The timing of the incident is significant because NCAA rules allow college hockey programs to begin formal activities once classes are underway. Arizona State’s fall semester began Thursday.
Heat Conditions in Tempe
The workout occurred during a period of extreme heat in the Phoenix area.
Tempe Fire Medical Rescue responded to Sun Angel Stadium at approximately 8:31 a.m. Thursday after receiving a report of a heat-related illness. Emergency personnel treated a patient at the location before transporting that person to a nearby hospital.
Weather conditions were particularly challenging. The average temperature in the Phoenix area that day was reported at 92.5 degrees, while an extreme heat warning was in effect throughout the week. The afternoon high eventually reached 106 degrees.
Officials have not publicly stated that heat was the confirmed cause of Mayich’s collapse. The circumstances remain under review.
Mayich’s Hockey Background
Mayich is a defenseman who was selected by the St. Louis Blues with the 170th overall pick in the sixth round of the 2023 NHL Draft.
Following his selection, he attended Blues prospect camps in both 2023 and 2024 but did not sign an entry-level contract with the organization.
Mayich developed through the Ontario Hockey League, where he completed a four-year career with the Ottawa 67’s. After finishing his OHL career, he moved to college hockey.
He spent the 2025-26 season at Clarkson University before announcing his transfer to Arizona State after Clarkson’s season ended in March.
The upcoming 2026-27 season was expected to be an important opportunity for Mayich as he prepared to continue his college hockey career with the Sun Devils.
St. Louis Blues Offer Support
The St. Louis Blues have publicly expressed their support for Mayich and his family while he receives medical treatment.
Blues president of hockey operations Doug Armstrong said the organization is keeping Mayich in its thoughts and expressed hope for his comfort and recovery.
Armstrong also said Mayich’s agent had kept the Blues informed about his medical status and extended the organization’s support to Mayich’s family, friends and teammates.
The statement underscored the concern surrounding the young defenseman as he remains hospitalized in Arizona.
What Happens Next?
Arizona State’s investigation could provide more information about the circumstances surrounding the workout, including how the exercise was organized and the conditions under which players participated.
For now, the university has limited the public information available because of medical privacy considerations. No detailed diagnosis or prognosis for Mayich has been announced.
The focus remains on Mayich’s recovery as his family, teammates, Arizona State and the Blues await further updates.
Matthew Mayich Situation: Key Facts
- Matthew Mayich is an Arizona State hockey defenseman and St. Louis Blues draft pick.
- He collapsed during an outdoor workout in Tempe.
- He was transported to a nearby hospital and remained hospitalized Tuesday.
- Arizona State is reviewing the circumstances surrounding the workout.
- Emergency responders initially received a report of a heat-related illness.
- Extreme heat conditions were present in the Phoenix area.
- Mayich was selected 170th overall by the Blues in the 2023 NHL Draft.
- He previously played for the Ottawa 67’s and Clarkson University.
- The St. Louis Blues have expressed their support for Mayich and his family.
The situation remains developing, and additional information could emerge as Arizona State continues its review and Mayich’s condition is updated.
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