Field of nightmares: Inside the NFL, player divide over playing surfaces - The Athletic
NFLPA - New injury data shows grass 'significantly safer' than turf - ESPN
NFL offseason priorities for 2023: Possible rules changes, safety reforms - ESPN
Cleveland Browns' JC Tretter re-elected as NFLPA president
NFLPA says new data shows turf fields still cause more injuries than natural surfaces
Artificial turf raises concerns about equity and injuries – The Ithacan
Field of nightmares: Inside the NFL, player divide over playing surfaces - The Athletic
The NFL cast JC Tretter out; the NFLPA president says that only makes him more powerful - Sports Illustrated
Injuries Maxwell Media Watch
Turf at Lucas Oil Stadium to be replaced
Why did JC Tretter retire? NFLPA president and former Browns, Packers center explains decision and how NFL may have influenced it