Why the Minnesota Vikings provide the perfect litmus test fort he Detroit Lions in NFL season opener

My column: http://www.theoaklandpress.com/sports/20130904/caputo-lions-face-crucial-opener-against-division-rival-vikings

Lions need an early lead vs. Peterson, Vikings

Replay of our live chat this week on Michigan, MSU after season openers, Lions' upcoming opener and Tigers' issues. We do this every Monday 1 p.m. You participation is easy and encouraged.