The good thing about Archer was he was usually where he was supposed to be, then he would sometimes miss the tackle. Diles and Walker often effed up their keys / reads / fits, so they were running to the wrong place while the other team had a big gain or scored. If Walker splits time with Perry again this season, we can just give up on him ever amounting to much. He should be winning that battle without trouble, but he doesn't get the mental part of the game.