Flags flew at half - mast and it was a somber day at the stadium named after him .
The Longhorns wore Darrell K Royal 's initials on their helmets to honor the former coach who died Wednesday .
Flags flew at half - mast and it was a somber day at the stadium named after Darrell K Royal .
The Longhorns wore Darrell K Royal 's initials on their helmets to honor the former coach who died Wednesday .