How it happened: Broncos fall to 2-2 after 32-23 loss to Josh McDaniels' Raiders – Estes Park Trail-Gazette
Chiefs grind out a win in Denver, secure #2 seed in AFC
Artificial Playing Surface Returns For UNLV's Next Football Game At Allegiant Stadium Sept. 17 - LVSportsBiz
Mile High Stadium - Wikipedia
Longing for NFL games on grass fields in Southern California - The San Diego Union-Tribune
Chicago Bears give Soldier Field a new surface
Horse Tracks: New turf at Sports Authority Field at Mile High? - Mile High Report
Seven sacks, three takeaways propel Broncos to shutout of Tennessee – Canon City Daily Record
NFL players union renews call for grass fields after Aaron Rodgers' injury
Seven sacks, three takeaways propel Broncos to shutout of Tennessee – Canon City Daily Record
Broncos Make Roster Moves
Artificial turf vs. real grass: NFL's ongoing problem with playing surfaces
Denver Broncos are as obsessed about their turf as their players – The Denver Post
The grass at Super Bowl LVII has been years in the making - ESPN