Miami Dolphins quarterback Tua Tagovailoa was stretchered off the field during Thursday's game against the Cincinnati Bengals with an apparent head injury that he suffered on a hard sack from Josh Tupou.
The 2020 first-round pick is in the midst of a breakout season highlighted by a six-touchdown performance against the Baltimore Ravens in Week 2. He currently ranks first in ESPN's Total QBR (82.8) after rating 18th in that metric (55.7) last year.
Tagovailoa suffered back and ankle injuries during the Dolphins' Week 3 win over the Buffalo Bills, and the NFL Players Association also launched an investigation to determine whether concussion protocols were properly enforced after he returned to that game following a halftime evaluation of a head injury.