Week 13 is no time to be caught off guard.
Missteps this late in the season can drastically change the direction of a franchise. Coaches can get fired, players no longer trusted as cornerstones, playoff hopes dashed.
Last week, "Upset Alert" went 3-1, with the Tennessee Titans, Arizona Cardinals and Dallas Cowboys all losing to opponents they were favored against. Only the New York Giants took care of business, and they did so convincingly.
Remember the guidelines for Upset Alert: "Underdogs" are determined by Vegas odds; putting a team on Upset Alert is not picking them to lose (it's just putting them on notice); potential Upset Alert teams are based on matchups, trends and team-specific scenarios.
So which teams should be worried in Week 13?