ASU hockey player hospitalized after collapsing during workout
2 sources • 1 min read • Latest: Aug 28, 2026, 11:43 PM
Last updated Aug 28, 2026

Matthew Mayich, a defenseman for the Arizona State University hockey team, collapsed during an outdoor workout on August 20 and suffered a cardiac event. He was taken to an area hospital and later transferred to Barrow Neurological Institute, where he remains in a coma. The involved trainer, Tim Ziesel, a former Green Beret, has declined to comment on the incident and is awaiting approval from ASU to issue a statement. ASU's administration is reviewing the circumstances surrounding the workout, which occurred amid extreme heat conditions. No further details about Mayich's condition have been disclosed as family and university officials prioritize privacy.
- •Matthew Mayich collapsed during a workout on August 20.
- •He is currently in a coma at Barrow Neurological Institute.
- •Tim Ziesel was involved but has not given a public statement.
- •ASU is reviewing the circumstances of the workout.
- •Extreme heat was reported in Phoenix on the day of the incident.
- 11:43 PMYahoo Sports — Ex-Green Beret says he left ASU workout just before player collapse | Exclusive
- 3:22 AMAZCentral — Former Green Beret tied to ASU hockey workout where player collapsed - azcentral.com and The Arizona Republic
- 9:50 PMYahoo Sports — Former Green Beret tied to ASU hockey workout where player collapsed
"An ex-Green Beret who led an outdoor ASU hockey workout says he left before a player collapsed. The player, Matthew Mayich, remains in a coma.
"Tim Ziesel said he wouldn't talk about what happened at the ASU track, where Matthew Mayich suffered what was described as a cardiac event.
"Tim Ziesel said he wouldn't talk about what happened at the ASU track, where Matthew Mayich suffered what was described as a cardiac event.
Sources
External links- Yahoo SportsAug 28, 2026, 11:43 PMEx-Green Beret says he left ASU workout just before player collapse | Exclusive
An ex-Green Beret who led an outdoor ASU hockey workout says he left before a player collapsed. The player, Matthew Mayich, remains in a coma.
- AZCentralAug 28, 2026, 3:22 AMFormer Green Beret tied to ASU hockey workout where player collapsed - azcentral.com and The Arizona Republic
Tim Ziesel said he wouldn't talk about what happened at the ASU track, where Matthew Mayich suffered what was described as a cardiac event.
- Yahoo SportsAug 27, 2026, 9:50 PMFormer Green Beret tied to ASU hockey workout where player collapsed
Tim Ziesel said he wouldn't talk about what happened at the ASU track, where Matthew Mayich suffered what was described as a cardiac event.
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