It’s an ESPN article but Jordan McNair was practicing on May 29th, where he apparently showed signs of exhaustion, was later transported to a hospital, and remained there until he died on June 13th. 

A piece:

"Our preliminary investigation reveals there is an unexplained one-hour time period when nothing significant was done to avoid the complications of heatstroke," Murphy said. "Although there is some evidence they allegedly tried to cool him down, he should have been iced immediately. He presented at the hospital with a temperature of 106, which means he was not cooled down.

"We’re very concerned about the unexplained one hour between the time of the seizure and hyperventilating that was observed by a coach, and what happened in that remaining hour before the EMT people were actually called. This points to an utter disregard of the health of this player, and we are extraordinarily concerned that the coaches did not react appropriately to his injury."