There are some teams that have very muddy running back situations, which only complicates matters for fantasy managers. The New Orleans Saints have Alvin Kamara, who is injured. They have Mark Ingram back, who also is injured and questionable heading into Thursday night's game. That leaves Tony Jones Jr., who just came off of IR. His rank increased because it seems likely that Kamara will be out and also Ingram either out or not 100 percent.
The Seattle Seahawks also have a murky situation. Rashaad Penny is the No. 1 back on the roster currently, but he is dealing with a hamstring injury and will likely be questionable for Monday's game. Alex Collins and DeeJay Dallas also are in the picture and will pick up extra work if Penny is ruled out. They are ranked back-to-back as RB3s, although the edge may go to Dallas just based on the eye test.
NFL Running Back Rankings: Week 12
Teams on bye: Arizona, Kansas City
— Rankings by Sarah Lewis, who is part of the Athlon Contributor Network and lives, eats, and breathes fantasy football. Have a fantasy football question? Send it to her on Twitter @Sarah_Lewis32.