Any. Given. Sunday. It’s not just the title of the most realistic football movie ever made. It’s a cliche that rings true for the NFL, as evidenced by last week’s double 5-0 takedown of the thenundefeated 49ers and Eagles by big underdogs in the Browns and Jets. The Giants, the biggest underdogs of the week, almost gave us a third major upset. Still, underdogs went 5-10 against the spread (ATS),…