Matter of fact, SI.com's Don Banks considers Johnson an above-average backup QB. He ranks Johnson 11th among the NFL's 32 backups.

11. Dallas: Brad Johnson -- Johnson is the only quarterback on the list who won a Super Bowl as a starter. The Cowboys offense wouldn't be as potent vertically if he were to take over for Tony Romo, but few passers have been more accurate or adept at knowing where to go with the football.

The biggest knock on Johnson is that he lacks arm strength. But he threw catchable deep balls in the last two games, completing a 37-yarder to Miles Austin and throwing a pretty pass that Mike Jefferson couldn't find on a corner route.

Johnson's career stats compare favorably with Troy Aikman -- not saying Johnson is a Hall of Famer, just he's had a pretty darn good career. He certainly can't be expected to perform like a Pro Bowler as a 40-year-old, but the Cowboys are confident that he wouldn't lose games if pressed into duty with all this talent around him.

Of course, the Cowboys could use a young QB to develop as Tony Romo's long-term backup and/or future trade fodder. Matt Moore, No. 15 on Banks' list, would have been a perfect fit.