Market Share Report: Never Trust Doug Pederson

After the Philadelphia Eagles rode Darren Sproles heavily in Weeks 8 and 9, they turned to Ryan Mathews for the big lifting in Week 10. Which other market share changes have fantasy football implications?In the NFL, you either get injured a hero or play long enough to see yourself become a fill-in.

We're now through 10 weeks of the season, and we've endured multiple cycles of this flow already. Our early-season saviors are now rotting on the waiver wire, hoping to snag a role late and slide back on into our lives. At the same time, we're holding parades for guys who were afterthoughts just a few weeks ago.

Here's the problem. We've still got seven weeks left, and that's plenty of time for…