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NFL under fire over its concussion protocol following Tua Tagovailoa's back-to-back game hits - ABC News
2021 NFL Week 9 Injury Recap
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Tom Savage's Return Raises Concussion Protocol Concerns - The New York Times
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Lessons to Be Learned From Tua Tagovailoa's Repeat Concussions - Brain Injury Association of America
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NFL Concussion Protocol After Miami Dolphins Quarterback Tua Tagovailoa - Bloomberg
2021 NFL season: Notable injuries, news from Sunday's Week 9 games
Review finds spotters didn't miss DeVante Parker head injury - ESPN