NFLPA renews call for safer fields - NBC Sports
J.C Tretter: 'Only Natural Grass Can Level The NFL's Playing Field' - Sports Illustrated Cleveland Browns News, Analysis and More
NFL files grievance alleging NFLPA told running backs to fake injuries as negotiating tactic - The Athletic
Packers' David Bakhtiari slams NFL, turf after Aaron Rodgers injury
NFL players demand grass fields amid turf injury concerns, union says
NFL Fields: J.C. Tretter Says New Data Shows 'Large Difference' Between Grass, Turf Surfaces
Packers LB calls out NFL over using turf after Rashan Gary injury
Aaron Rodgers' season-ending injury highlights controversy over artificial turf as playing surface in NFL
NFLPA calls on 6 venues, including Ford Field, to improve playing surfaces
NFLPA President Tretter Calls for NFL Teams to Remove Artificial Turf
JC Tretter's term as NFLPA president has included pandemic response and a divisive CBA vote - The Washington Post
NFL Players Association Calls For Turf Ban At Six Stadiums – OutKick
NFL exec claims 'grass is not the answer' after NFLPA turf outcry