ASU hockey coach put on leave after player collapsed during workout

Read the original at CBS News ↗
CBS News · collected 2026-09-30 · by Jordan Freiman

Quick Summary

Arizona State University has placed hockey coach Greg Powers on paid administrative leave following a player's collapse during a workout last month. Matthew Mayich, 21, collapsed while running with a medicine ball under extreme heat conditions and remains hospitalized with a poor prognosis. The university appointed assistant coach Mike Corbett as interim head coach but declined to specify how long Powers would be on leave. Players have disputed the official account of events, alleging that insufficient water breaks were provided and necessary emergency equipment was absent during the workout session run by an outside consultant.
Written locally by qwen2.5:14b on 2026-09-30, using this article's own text rather than the other coverage of the same event (that is the story summary below).

AI analysis runs on qwen2.5:14b, locally

Story summary

Seven members of Arizona State’s hockey team anonymously sent a letter through attorney Timothy J. Casey to President Michael Crow on Monday, calling for the coaching staff to be placed on administrative leave until an independent investigation is completed into the collapse of their teammate Matthew Mayich during an outdoor workout on Aug. 20. The players fear retaliation from head coach Greg Powers and his assistant coaches, who control playing time, scholarship levels, and roster status. The letter disputes ASU’s initial probe, which stated that Mayich received proper hydration and care after collapsing; the players assert he did not receive adequate medical attention or hydration during the workout.

The parents of Matthew Mayich, John and Christina Mayich, also called for coaches involved to be placed on leave in a statement sent through their lawyer. In response, ASU athletic director Graham Rossini announced that head coach Greg Powers has been put on paid administrative leave pending an independent investigation into the incident.

NCHC supports this decision, stating it aligns with providing stability and support for both Matthew Mayich and the hockey program during these challenging times.

Written for “Arizona State Hockey Scandal” on 2026-10-04, grounded in this article and the 13 other(s) covering the same event.

Signals How these are calculated →

Claims extracted
22
claim-shaped sentences
Uncertain
14%
3 of 22 hedged
Leaning
not political
takes no side on a contested political question
Correction & hedging signals
65.5
corrections and hedging in what we collected; not a measure of accuracy
Outlets on this story
14
Sports
Narrative spread
1
articles carrying this framing
Analyzed 2026-09-30 · how these are computed

Story

📰 Arizona State Hockey Scandal
Sports · 14 article(s) covering the same event. See how they differ ↓

How this is being covered How these are calculated →

Article leaning vs. publisher reliability
Source leaning vs. consistency

Compared with similar articles

This article reads unscored and hedges 14% of its claims. Each row says how that neighbour differs.
NBC News · 0.97 cosine similarity
⚖️ leaning not scored 🔴 15% hedged 5 of 33 📰 publisher trust 95
“Both articles describe ASU putting hockey coach Greg Powers on leave after player Matthew Mayich collapsed during a summer workout, with Mayich unlikely to recover.”
The Independent · 0.95 cosine similarity
⚖️ leaning not scored 🔴 10% hedged 2 of 20 📰 publisher trust 59
“Both articles describe ASU placing hockey coach Greg Powers on administrative leave after a player, Matthew Mayich, collapsed during an August 20th workout.”
New York Post · 0.93 cosine similarity
⚖️ leaning not scored 🔴 6% hedged 1 of 16 📰 publisher trust 64
“Both articles describe Arizona State hockey coach Greg Powers being placed on paid leave after player Matthew Mayich collapsed during a workout and was hospitalized, with assistant coach Mike Corbett temporarily taking over.”
Fox News · 0.87 cosine similarity
⚖️ leaning not scored 🔴 12% hedged 3 of 25 📰 publisher trust 69
“Both articles describe the same incident involving ASU hockey coach Greg Powers being placed on administrative leave following a player, Matthew Mayich, collapsing during a workout and falling into a coma.”
Toronto Star
⚖️ leaning not scored 🔴 5% hedged 1 of 22 📰 publisher trust 63
“Both articles report on the same incident involving the collapse of Matthew Mayich during an Arizona State hockey team workout and subsequent actions taken by the university.”
Fox News · 0.96 cosine similarity
⚖️ leaning not scored 🔴 0% hedged 0 of 13 📰 publisher trust 69
“Both articles describe ASU placing hockey coach Greg Powers on paid administrative leave following a player's collapse during a workout in August.”
CBC News · 0.95 cosine similarity
⚖️ leaning not scored 🔴 0% hedged 0 of 15 📰 publisher trust 77
“Both articles report on Arizona State University placing hockey coach Greg Powers on paid administrative leave after a player, Matthew Mayich, collapsed during an Aug. 20 workout.”
CBS News · 0.87 cosine similarity
⚖️ leaning not scored 🔴 0% hedged 0 of 2 📰 publisher trust 66
“Both articles describe ASU's hockey coach being put on leave after a player collapsed during a workout in August, with the player still hospitalized.”
New York Post
⚖️ Leans strongly left 🔴 24% hedged 6 of 25 📰 publisher trust 64
“Both articles discuss the same incident involving ASU hockey coach Greg Powers being put on administrative leave following player Matthew Mayich's collapse during a workout in August 2026.”
Toronto Star
⚖️ leaning not scored 🔴 0% hedged 0 of 3 📰 publisher trust 63
“Both articles report on the same incident of an Arizona State hockey player collapsing during a workout and subsequent calls for coaches to be placed on leave.”

Publisher

CBS News · 1939 article(s) · 6 correction(s) detected
Running correction rate · 6 correction(s)
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Who wrote this

Jordan Freiman
7 article(s) here · 1 carrying a prediction
🔮 Pike was set to become the first woman executed in Tennessee in the last 200 years after the Supreme Court ruled earlier Wednesday that her execution could proceed.
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🔮 Vanore said they believe some of the videos involved include "play-acting" while other events "could be real."
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2026-09-15 · assertive framing · Who won Emmys for 2026? See the full winners list here.
🔮 With some 67,000 people under evacuation orders amid the , hundreds could be coming home to total losses.
Also by Jordan Freiman
Nothing else under this byline is closely related to this article, so these are simply their most recent.
All 7 articles by Jordan Freiman →

Topics

ASU Arizona State University CBS Canada Ontario

Subjects

Mayich PERSON · 7× ASU ORG · 4× Powers PERSON · 3× Matthew PERSON · 2× Arizona State University ORG · 1× Canada GPE · 1× Greg Powers PERSON · 1× Matthew Mayich PERSON · 1× Mike Corbett PERSON · 1× Ontario GPE · 1×

Narrative

Seven other players have disputed the school's version of events, saying in a letter sent Tuesday to ASU's president that the outside consultant who ran the workout was not approved in accordance with the school's policy, the workout lasted longer than the school said, the players did not receive sufficient water breaks, and the workout "continued after some of us showed signs of distress." The students, who chose to remain anonymous for fear of retaliation, stated that Mayich in particular was not given any water breaks and had shown signs of distress before the final exercise during which he collapsed.
framing: assertive · carried by 1 article(s) · first seen 2026-09-30
🔮 ASU said assistant coach Mike Corbett will take over for now and that an interim coach would be named "soon."
2026-09-30 · CBS News
ASU hockey coach put on leave after player collapsed during workout · assertive framing

Claims (22 extracted, 3 hedged)

Arizona State University has placed its hockey coach, Greg Powers, on paid administrative leave after a player collapsed during a workout last month and remains hospitalized. asserted
player → place → workout
ASU said assistant coach Mike Corbett will take over for now and that an interim coach would be named "soon." asserted
coach → say → ?
The school did not say how long Powers was expected to remain on leave. asserted
Powers → say → leave
Matthew Mayich, a 21-year-old sophomore from Ontario, Canada, collapsed during a workout on Aug. 20. asserted
Mayich → collapse → Aug.
Robert Carey, an attorney for the Mayich family, has said he is "unlikely to recover," according to CBS affiliate KPHO-TV. uncertain
he → say → TV
According to a report from the school about the incident, Mayich was taking part in a "wind-down" exercise that involved running with a medicine ball at one of the school's outdoor facilities when he collapsed. uncertain
he → accord → facilities
The high temperature that day was over 100 degrees, according to the National Weather Service, although the school said the workout took place when the temperature ranged from 86 to 89 degrees. uncertain
temperature → accord → degrees
"When running, Matthew appeared to struggle, and then in rapid succession stumbled, dropped the medicine ball, and fell to the ground. asserted
Matthew → run → ground
He attempted to get up and resume running but fell to his knees," the report said. asserted
report → attempt → knees
Mayich was told to stay down by players and coaches and an athletic trainer tried to use iced towels and cold water to cool him down. asserted
trainer → tell → him
The school said Mayich was initially responsive but that his condition deteriorated. asserted
condition → say → ?
Mayich's parents, John and Christina, had previously called for the coaches who ran the workout to be put on leave. asserted
who → call → leave
In a statement Wednesday, they said putting only Powers on leave isn't enough. asserted
putting → say → leave
"Putting Powers on leave while his best friend of the last decade stays in charge of the locker room doesn't solve the problem," they said in a statement. asserted
they → put → statement
"If ASU won't remove him, even just to err on the side of player safety, then the interim head coach it has promised should have the authority to place on leave anyone who poses a risk of retaliation against these players." asserted
who → remove → players
Seven other players have disputed the school's version of events, saying in a letter sent Tuesday to ASU's president that the outside consultant who ran the workout was not approved in accordance with the school's policy, the workout lasted longer than the school said, the players did not receive sufficient water breaks, and the workout "continued after some of us showed signs of distress." The students, who chose to remain anonymous for fear of retaliation, stated that Mayich in particular was not given any water breaks and had shown signs of distress before the final exercise during which he collapsed. asserted
he → dispute → which
They also said required emergency equipment, like cold-water immersion tubs, wasn't on the field. asserted
equipment → say → field
The workout, which the students say was run by Tim Ziesel, a man whom the school described as "an individual who had spoken with the ASU Hockey team in the 2025-26 season about topics of leadership and teamwork," was described in the students' letter as "grueling" and "military-style." Ziesel, in a statement released by his attorney, said, "There is no such thing as a military style workout other than calisthenics done to a cadence." "The term 'military style workout' is a term that was made up out of thin air," he said. asserted
he → say → air
"The actual workout would be considered easy by a high school varsity football or basketball team. asserted
workout → consider → team
They are not served by made up terms." asserted
They → serve → terms
The students alleged Mayich was left in the sun for several minutes after he collapsed, and "the only cooling on hand was one small cooler holding a few Powerade sideline towels ... squirt bottles that put out a stream of water rather than a spray, and later, after he was moved, a garden hose with warm water." asserted
he → allege → water
The students in their letter requested that the staff responsible for the workout be placed on leave pending the results of an independent investigation. Maricopa County Attorney Rachel Mitchell said Tuesday on social media that the ASU Police Department is investigating the incident, and once that probe is finished, her office will "review this matter at the highest level." asserted
office → request → level
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