Panthers' defense now a problem along with the offense as NFL's only winless team looks for answers
Source - NFLPA filing grievance over hardness of Panthers' turf - ESPN
Panthers QB woes continue, 49ers land new football coach and the grass vs. turf debate
Panthers players push owner Tepper for grass field - The San Diego Union-Tribune
NFL players union renews call for grass fields after Aaron Rodgers' injury – WKTY
NFL's billionaire owners want to let private equity buy stakes in teams
Rodgers, NFL players urge league to nix turf, go with grass
NFL players union renews call for grass fields after Aaron Rodgers' injury –
Why NFLPA urge to switch from turf to grass impacts Panthers
It was like concrete': Time for David Tepper to tear out Panthers' turf at BoA - The Athletic