KC Joyner, ESPN Staff Writer 8y

Are these boom-or-bust fantasy running backs worth the risk?

Fantasy, Fantasy NFL, NFL

Fantasy football players should not be judged merely on static rankings, but rather on a spectrum of overall, boom-or-bust ratings.

The details of this grading method were covered in a recent analysis of the biggest boom-or-bust fantasy quarterbacks in 2016. In a nutshell, this system projects the overall upside and downside value of every player on a color rating system, where blue (a score of 90 or above) is elite, green (80-89 grade) is a strong weekly starter, yellow (60-79 grade) is a spot starter or solid backup and red (59 or below) is a bench or do-not-draft candidate.

This third part of this series takes a look at which boom-or-bust running backs need to be on your fantasy radar screen.

There are more volatile candidates at the upper tier of the running back position than there are in any of the other positions in this series. The first on this list is last year's leading scorer at running back, who could either repeat that performance or fall all the way to a yellow rating.

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