News Neuroscience Why traumatic brain injuries raise the risk of a second, worse hit Slowed reaction times, dizziness and double vision confound a quick-moving quarterback When he got sacked on September 29, Miami Dolphins quarterback Tua Tagovailoa (teal uniform, No. 1) sustained a head-rattling concussion. His injuries have reignited discussions of brain safety for professional football players. Andy Lyons/Getty Images Share this:EmailFacebookTwitterPinterestPocketRedditPrint By Laura Sanders October 7, 2022 at 4:36 pm In a football game on September 25, Miami Dolphins quarterback Tua Tagovailoa got the pass off but he got knocked down.