NFL Players Association president calls for grass surfaces to be used, NFL News
Cleveland Browns center JC Tretter elected new NFLPA president
JC Tretter will remain as the NFLPA president for another 2-year term
The NFL cast JC Tretter out; the NFLPA president says that only makes him more powerful - Sports Illustrated
JC Tretter makes retirement decision amid blackball speculation
JC Tretter will have 18 more months as NFLPA president - NBC Sports
NFLPA president calls for league 'to re-evaluate what is an acceptable surface' after preseason opener in Chicago - ESPN
NFL narrowly achieves labor peace through 2030 season
NFLPA president JC Tretter rips NFL's Soldier Field standards