NFLPA president JC Tretter rips NFL's Soldier Field standards
It Sucks! Angry NFL Rips Into Soldier Field's Terrible Turf
Kelce family advocates for NFL stadiums to use grass fields after turf injury
NFLPA president JC Tretter rips into the condition of Soldier Field and claims NFL must 'do better'
Soldier Field grass to be re-sodded before Bears season opener – NBC Sports Chicago
NFLPA President J.C. Tretter was unimpressed with Soldier Field's field
NFLPA president JC Tretter rips NFL's Soldier Field standards
NFL playing surface debate reignites: 'Grass is the way to go, by far'
NFL Players Association calls for better playing surfaces
Rodgers, NFL players urge league to nix turf, go with grass