Dolphins quarterback Tua Tagovailoa is once again hearing calls to retire after suffering the third diagnosed concussion of his young career. The big picture: Tagovailoa, who just signed a $212 million contract, has been the subject of somber reflection as commentators, coaches and former players weigh in on whether the 26-year-old should quit football. • Tagovailoa suffered a scary head injury during a third-quarter scramble in Thursday's loss to Buffalo. • In 2022, Tagovailoa considered...