Fantasy Football Week 11 - Running Back Tiers

All data are from A clustering algorithm is applied to discover the tiers. The resulting charts let you visualize the tiers and ranks, and help you decide your line up each week.
Tier 1: Matt Forte, Arian Foster, Le'Veon Bell, Jamaal Charles, Marshawn Lynch
Tier 2: LeSean McCoy, Eddie Lacy, Mark Ingram, Alfred Morris
Tier 3: Andre Ellington, Ahmad Bradshaw, Frank Gore, Shane Vereen
Tier 4: Terrance West, Steven Jackson, Jeremy Hill, Jerick McKinnon, C.J. Anderson, Ryan Mathews, Rashad Jennings, Giovani Bernard
Tier 5: Joique Bell, Bishop Sankey, Trent Richardson, Fred Jackson, Lamar Miller
Tier 6: Tre Mason, Jonathan Stewart, Ben Tate, Darren McFadden
Tier 7: Darren Sproles, Bobby Rainey, Charles Sims, Montee Ball
Tier 8: Matt Asiata, Reggie Bush, DeAngelo Williams, Branden Oliver, Jonas Gray, Bryce Brown