The injury scare to New England Patriots quarterback Tom Brady Wednesday has put the backup plans for the rest of the NFL's star players into a much brighter focus.
While the NFL is made up of 32 independent teams and hundreds of players, it became stunningly obvious just how much of the 2013 season was actually riding on the health of Brady's knee. Without the Hall of Fame quarterback available, the Patriots could have been looking at a lost season with Ryan Mallett or (gasp!) Tim Tebow at quarterback. The rest of the AFC could have been turned upside down.
However, the Patriots aren't the only NFL team with question marks behind a star player.
In the following slides, we'll take a closer look at each of the backup situations currently in place for the NFL's biggest stars. Each Plan B will be graded based on a number of factors, such as talent, readiness and depth.