Artificial turf vs. real grass: NFL's ongoing problem with playing surfaces
NFLPA president JC Tretter rips into the condition of Soldier Field and claims NFL must 'do better'
Titans unbolt renderings of new stadium - Coliseum
NFLPA president JC Tretter rips NFL's Soldier Field standards
NFL slammed by NFLPA's JC Tretter over Soldier Field fiasco
Chicago Bears installing new turf at Soldier Field ahead of season opener against 49ers
Bears' Soldier Field grass has a long history of being an obstacle – NBC Sports Chicago
Clearly need to re-evaluate what is an acceptable surface - NFLPA president slams league and Soldier Field for horrendous playing conditions in Chicago
NFLPA president chastises NFL for Soldier Field conditions via Twitter – NBC Sports Chicago
NFL Players Association Asks Owners to Return to Natural Grass
Turf vs. grass: List of NFL stadiums with real grass vs. turf fields
Who's to blame for Soldier Field turf?
Chicago Bears Team News, Fixtures and Results
Soldier Field conditions were embarrassing for Week 1
NFLPA president JC Tretter rips into the condition of Soldier Field and claims NFL must 'do better'