First-half NFL gambling lessons

Tony Romo and the Dallas Cowboys are an NFL-best 7-2 against the spread. Tim Heitman/USA TODAY Sports

LAS VEGAS -- In this weekly "Opening Line" column, before looking at the NFL lines moves for the coming week, I usually share what I learned from a gambling perspective from the previous week and comment on the best and worst teams in regard to their against-the-spread and over/under records.

Well, with Week 9 nearly in the books, it seemed like a good time to look back over the entire first half of the NFL season, instead of just Week 9, and share what I've noticed from my view here in Vegas. I'll also take a look at the early line movement in Week 10 openers.

To begin, a bunch of ESPN Insider readers have been asking for the gambling records of all 32 teams (OK, it was only two people, but I have an unexplained sense of insecurity and want everyone to like me), so I was planning to do it. Once my editor requested it as well, that sealed the deal.

Below is the chart with teams listed in order of their ATS percentage. After every kickoff, I post the ViewFromVegas.com Consensus Closing Line based on a survey of all the books in town on the Don Best real-time odds screen (and Cantor Gaming from my phone app) and then grade them in the weekly "in-game(s)" percent thread in the VFV Forums.

Midseason takeaways

1. Best/worst teams against the spread