Vikings bring up a running back, bring back Harrison Smith

With running backs Adrian Peterson (foot) and Toby Gerhart (hamstring) both questionable for Sunday’s home game against the Eagles, the Vikings had only one healthy tailback:  Matt Asiata. They now have two. The Vikings have elevated running back Joe Banyard from the practice squad.  It’s one of several roster moves for the 3-9-1 Vikings. They…