NFL under fire over its concussion protocol following Tua Tagovailoa's back-to-back game hits - ABC News
NFL faces intense scrutiny over concussion protocols after Tua Tagovailoa hit, News
N.F.L. (National Football League)
Following review of the handling of Tua Tagovailoa's injury, NFL, NFLPA agree 'the outcome in this case is not what was intended' - ESPN
Trevor Lawrence, Tua Tagovailoa among young NFL QBs causing parity - Sports Illustrated
NFL's chief medical officer says Tua Tagovailoa showed 'nothing that would have triggered' concussion protocol