Thanks to the wins above replacement statistic (commonly referred to as WAR), we have a useful and applicable metric to gauge an individual player's value to his team in baseball. Football is decidedly more difficult to quantify than baseball for a variety of reasons, but we are often pressed to assess just how much a single player means to his team.
We can reliably posit that, on the whole, quarterbacks tend to dictate their team's on-field success more than any other position, as signal-callers such as Aaron Rodgers, Drew Brees, Peyton Manning and Tom Brady have a unique ability to lift the roster around them. They're indispensable.
But that isn't to discount the importance of non-quarterbacks, as we continue to see their presence tilt the balance of a game every week. With that in mind, here's a look at eight non-quarterbacks who are among the most indispensable for the 2014 season for their respective teams: