Why this game is intriguing: One of a handful of shocking teams this year, the Vikings rebuilt using an accelerator. And even when they don't do everything right, leave it to a pair of special teams touchdowns against Detroit to take them to 3-1. Not a misprint, the green and inexperienced Vikings are 3-1. The fact that this is a home game in Minnesota doesn't bode well for the reeling Titans.
What to watch: The battle of second-year starting quarterbacks never materialized. Tennessee's Jake Locker could miss multiple games with a left (non-throwing) shoulder injury, which means it's on Matt Hasselbeck's shoulders against Christian Ponder. Hasselbeck was on-again, off-again in cleaning up last week against the Texans, but he should find an easier assignment against the Vikings' defense. Thanks to a renewed effort from the running game -- Chris Johnson logged 141 yards in Week 4 -- this one has upset potential.