From players getting COVID-19 vaccinations to relaxed coronavirus protocols to lineup issues, particularly at quarterback, the NFL faces a multitude of questions as training camps open.

The Titans traded Casey to Denver this offseason in a salary dump, clearing $11 million in cap space by sending the five-time Pro Bowl defensive lineman to Denver for a seventh-round draft choice. Even with Casey on his side last year, Henry was stifled in a 16-0 loss at Denver, gaining just 28 yards on 15 carries. That was easily the low point in a season in which Henry ran for an NFL-best 1,540 yards. “Having a player of his caliber and his leadership not be out there with us is definitely going to be a blow to the team," Casey said. “He’s a game wrecker,” Henry said.