The quiet (season) killer: injuries in the NFL … For NFL GMs and coaches its now mostly just a waiting game. They have picked their squads and while there will always be some roster tweaking throughout the season, the team they have now is pretty much the team they’ll have this season. They hope! Because the other big element to whether the season will be a success or failure is whether their teams can stay healthy. Here’s a quick overview of those kinds of season-altering injuries.