By settling the concussion class action in 2013, the NFL avoided public disclosure of what it knew and when it knew it about ...

Everything, I think, takes risk...Every time we suit up, we’re all taking a risk that we could potentially get hurt, whether it’s a concussion, a broken bone, anything. You get up off the bed ...

He was ruled out with a concussion ... "Right now it's more about getting a proper procedural evaluation (Friday), and taking it one day at a time," Dolphins head coach Mike McDaniel said.

"Every time we all suit up, we're all taking a risk that we could potentially get hurt, whether it's a concussion, a broken bone, anything. You get up off of the bed the wrong way, you potentially ...

Maybe this concussion changes things — it absolutely ... And, honestly, if you have to ask those questions, it's probably time to hang it up. But Tagovailoa is only 26 years old.

The Dolphins needed almost no time before announcing it was a concussion ... The NFL later changed its concussion protocol to mandate that if a player shows possible concussion symptoms ...

The Dolphins needed almost no time before announcing it was a concussion ... The NFL later changed its concussion protocol to mandate that if a player shows possible concussion symptoms ...

The Dolphins needed almost no time before announcing it was a concussion ... The NFL later changed its concussion protocol to mandate that if a player shows possible concussion symptoms ...

and it has expanded its list of “no-go” symptoms over time. With the knowledge that concussions can have serious long-term effects, the NFL’s concussion protocol is a critical safety measure ...

The Dolphins needed almost no time before announcing it was a concussion ... The NFL later changed its concussion protocol to mandate that if a player shows possible concussion symptoms ...