A spokeswoman for John Peter Smith Hospital says the man was in the intensive care unit. No other information about him has been released.
An Arlington Fire Department spokesman previously said the man fell 12-15 feet on Saturday at AT&T Stadium. The man was wearing a Texas shirt and was conscious when he was transported. The cause of the fall is unclear.
The fire department has turned over the investigation to stadium authorities.
The Longhorns lost the game 20-17.