Vikes have a battle at NT

2013 is going to be a pivotal year for a number of defensive linemen on the Minnesota Vikings' roster, as a handful are in the final year of their current contract. The big name that's drawn a lot of attention is DE Jared Allen, but fellow DEs Everson Griffen and Brian Robison, as well as DTs Kevin Williams and Fred Evans are all slated to be free agents if they don't sign a new deal before the start of the 2014 league year. For Evans, he may have a significant case to lay on the table when talks pick up, as he's in the mix to start at NT this fall.