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NFLPA initiates concussion investigation after wobbly Tua Tagovailoa continued playing vs. Bills
NFL faces intense scrutiny over concussion protocols
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NFL Concussion Protocol change impacts Miami Dolphins, Teddy Bridgewater - The Phinsider
Some NFL players still willing to hide concussions
Tua Tagovailoa's head injury puts NFL concussion protocol under scrutiny - The Washington Post
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Tua Tagovailoa Is in the NFL's Concussion Protocols Again - WSJ
Colts QB Anthony Richardson in protocol after self-reporting concussion - ESPN