It wasn't so long ago that concussions weren't a big talking point in the NFL. Players who were hit hard were sent back into the game, and post-playing-days issues were attributed to factors outside the sport. In today's NFL, they are taken far more seriously.

Football is a contact sport, but leagues do their best to implement rules that can pair riveting action with player safety. Head-to-head hits can result in concussions, which, at their baseline, are brain injuries. The NCAA, like the NFL, is striving to ...

There is no set timeline for when Tagovailoa could return to the field, but before he can play again, he will need to go through the NFL's concussion protocol. Here's a full explanation of concussions in the NFL, including how protocol works and when ...