The most important position in the NFL is quarterback. Five teams are already without their top signal caller. The Colts lost Andrew Luck to his sudden retirement. The Jaguars lost free agent pickup Nick Foles in his first game. The Jets will be without Sam Darnold for a month due to mono. His back up snapped his ankle on Monday night. The Saints will be without Drew Brees until the middle of the season due to his thumb injury. And Ben Rothlisberger’s elbow will cost him and the Steelers the entire season. At this pace there won’t be any starting quarterbacks left by the end of the year.