The following day, Tupou admitted he had "mixed emotions" after his tackle on Tagovailoa caused the Miami Dolphins quarterback's head and upper back to hit the turf hard and his fingers to spasm in an odd manner.
Tagovailoa, 24, was down on the field for approximately 10 minutes before being taken by ambulance to the University of Cincinnati Medical Center.
"I was excited to get my first sack, but at the same time it's tainted because I didn't want to hurt Tua. I never intended to hurt him," the 28-year-old Tupou said Friday.
"I was just trying to make a rolling tackle and his head hit the ground.