Matthew Mayich, a 21-year-old hockey defenseman from Ottawa, Canada, remains in critical condition after suffering an exertional heat stroke during his first team workout at Arizona State University, less than a week after arriving on campus.
Mayich had previously played for the Ottawa 67’s in the Ontario Hockey League before beginning his college career at Clarkson University in New York. He transferred to Arizona State University during the 2026 offseason and was preparing to join the Sun Devils for the 2026–27 season.
He had reportedly been on the ASU campus for less than a week when the incident occurred.
On August 20, 2026, the first day the NCAA permitted hockey programs to conduct formal coach-led activities, Mayich took part in an outdoor workout at ASU’s track and field facility in Tempe. According to information provided by his family’s attorneys, the session lasted more than an hour and included demanding exercises such as sprints, planks, push-ups, and bear crawls.
The workout was reportedly led in part by a third-party trainer described by the family’s attorney as a former Green Beret who had previously worked with the Arizona State hockey program.
Weather conditions were already extreme that morning. Temperatures had reached approximately 90 degrees during the workout, while the day’s high temperature ultimately reached about 104 degrees.
According to Mayich’s attorneys, the workout involved minimal access to water. They further allege that teammates noticed Mayich was experiencing signs of serious physical distress, including dizziness and disorientation, before he collapsed.
The family’s legal team has questioned why the workout was allowed to continue despite what they say were visible warning signs. They allege that teammates attempted to raise concerns about Mayich’s condition but that their concerns were not adequately addressed.
At approximately 8:30 a.m., Tempe Fire Medical Rescue was dispatched to the facility after Mayich collapsed.
According to the family’s attorneys, he suffered exertional heat stroke that triggered a cardiac event and severely limited oxygen reaching his brain. He was transported to Barrow Neurological Institute in Phoenix, where he has remained under medical care.
Barrow Neurological Institute is a prominent neurological and neurosurgical center, and Mayich’s family has remained at his side as doctors have treated him following the catastrophic medical emergency.
Six days after the collapse, the St. Louis Blues publicly acknowledged Mayich’s condition. The organization released a statement expressing support for the young defenseman and his family while he continued receiving treatment in Arizona.
The statement reflected Mayich’s connection to the professional hockey world. He had been expected to continue pursuing his hockey career, but his medical emergency abruptly changed those plans.
On September 1, the family’s lead attorney, Robert Carey, provided another update concerning Mayich’s condition. Carey said doctors and the family believe there is no prospect of meaningful neurological recovery.
Carey was careful to distinguish Mayich’s condition from what is commonly described as a coma. He argued that the term could imply a possibility of recovery that does not apply in Mayich’s case.
“His body ceased functioning in a fundamental way,” Carey said, describing his condition as irreversible.
The statement has intensified the family’s calls for answers about the circumstances surrounding the workout.
Their attorneys are questioning why Mayich, who had recently arrived from Canada and was unfamiliar with Arizona’s extreme summer heat, was placed in a demanding outdoor workout so soon after arriving on campus.
They are particularly focused on the conditions under which the workout was conducted, including the length and intensity of the exercises, the availability of water, environmental conditions, and the response to signs that Mayich was becoming physically compromised.
The family’s attorneys have also called into question the university’s internal review. They argue that the circumstances warrant an independent investigation rather than a review conducted solely within the institution.
Another demand involves the coaching staff. The family’s attorneys have called for coaches involved with the program to be suspended while the circumstances are investigated, saying teammates should be able to speak openly about what happened without fearing possible retaliation.
Arizona State University has confirmed that it is reviewing the facts surrounding the incident.
ASU athletic director Graham Rossini said the university is examining what occurred, while senior vice president James Rund is leading the review.
The university has also said it maintains heat-illness guidelines based on industry standards. Officials have declined to provide additional details about Mayich’s medical circumstances or personnel matters, citing privacy laws.
The competing accounts have left important questions unresolved. The university has not publicly acknowledged the family’s allegations that teammates raised concerns about Mayich’s condition or that water availability was inadequate.
It also remains unclear from the information provided exactly how the workout was supervised, what heat-safety measures were in place that morning, what medical or athletic-training personnel were present, and how quickly intervention occurred after Mayich began showing symptoms.
Those questions are likely to be central to any independent review or legal proceedings that may follow.
The family’s attorneys maintain that the circumstances surrounding the workout require careful scrutiny because heat stroke is a recognized risk during strenuous exercise in extreme temperatures, particularly when warning signs such as confusion, dizziness, or disorientation appear.
Whether ASU’s procedures were followed and whether those procedures were adequate under the circumstances will ultimately depend on the evidence gathered by investigators.
Mayich’s story has also resonated throughout the hockey community because of how quickly his future changed. He had transferred to ASU with the expectation of continuing his college hockey career and had connections to professional hockey through the St. Louis Blues.
He never played a game for Arizona State.
He also never signed the entry-level contract with the Blues that he had been expected to pursue as his hockey career progressed.
Instead, his first formal team activity at his new university became a medical emergency that left him with an irreversible neurological condition, according to his family’s attorney.
At just 21 years old, Mayich is now surrounded by his family as they confront an outcome they never anticipated when he arrived in Arizona.
For his loved ones, the focus is no longer on the hockey career he hoped to build but on understanding exactly what happened that August morning.
They want the circumstances surrounding the workout examined independently, they want the accounts of teammates heard, and they want to know whether anything could have been done differently that might have prevented the catastrophic medical emergency.
The university’s review is ongoing, and no final findings have been publicly announced. The allegations made by Mayich’s attorneys have not been established as fact, and responsibility for the incident has not been determined.
What remains undeniable is the seriousness of Mayich’s condition and the profound impact it has had on his family, teammates, coaches, and the broader hockey community.
A young player who had been on Arizona State’s campus for less than a week arrived expecting to begin a new chapter in his life. Instead, his first workout ended with a medical crisis that his family says has permanently changed his future.
As the investigation continues, Mayich’s loved ones remain at his side, seeking answers and accountability while hoping that the circumstances of his collapse will be fully examined.
