NFL's concussion protocol modified after Tagovailoa review
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The N.F.L. Issues New Guidelines on Concussions - The New York Times
Investigation determines Miami Dolphins followed concussion protocol with Tua Tagovailoa - CBS News
Here's how the NFL's concussion protocol really works
N.F.L. Agrees to Settle Concussion Suit for $765 Million - The New York Times
AP Source: NFLPA fires consultant involved in Tagovailoa's concussion check
2021 NFL CBA negotiations - The nine biggest looming issues - ESPN
NFL, players' union agree to modify concussion protocol after Dolphins QB Tua Tagovailoa injury
After Agreement in N.F.L. Concussion Case, Retirees Will Look at Details - The New York Times
NFL and NFLPA to make changes to Concussion Protocol to improve player safety after Tua injury
NFL, players union agree on updated concussion protocol – KIRO 7 News Seattle