Here's how the coach who helped unlock Brett Favre and Russell Wilson is trying to do the same for Tua Tagovailoa
Sunday Morning Quarterback: Brett Favre's memory loss puts a high-profile face on NFL's concussion problem – New York Daily News
Brett Favre: I suffered a concussion on 'probably 90 percent' of tackles
McGinn Files: The Rise of Brett Favre, Part II
Drugs backed by Brett Favre 'exaggerated effectiveness and lied about NFL links'
Top QBs through Super Bowl XL: Brett Favre, Tom Brady rise
Brett Favre: Playing in NFL led to painkillers addiction - Sports Illustrated Vault
Brett Favre adds fodder to head injury concerns - ESPN
Drugs backed by Brett Favre 'exaggerated effectiveness and lied about NFL links'
The Chronicles of Favre-ia: Brett Favre's backups go deep on life with the incomparable No. 4
Brett Favre and his thousands of concussions: The legendary QB's shocking statement
Packers' Brett Favre opens up to Megyn Kelly about concussion issues
NFL Legend Brett Favre Says He's Likely Had 'Thousands' of Concussions
Brett Favre Says He Suffered 'Thousands' Of Concussions In NFL Career
Brett Favre looks back on time with Green Bay Packers, more - Sports Illustrated