Luke Kuechly, NFL star with history of concussions, retires aged 28, Carolina Panthers
Last year was scarier,' but third Luke Kuechly concussion should give us all pause
Panthers Luke Kuechly trying out collar to reduce concussion risk
Carolina Panthers' Luke Kuechly Tries On Q-Collar After 2016 Concussion
Panthers' Luke Kuechly remains in concussion protocol, despite earlier reports - The Washington Post
Luke Kuechly Interview Pt. 1 - His Q-Collar Experience
Injury-plagued Panthers linebacker Luke Kuechly retiring after eight NFL seasons
5 NFL players who were sent into retirement by concussions
What is the Q Collar, the device NFL players are wearing around their necks