By Kevin Sweeney Postseason ticket prices for the Seahawks and Commanders spiked after big Week 8 wins. The NFL season enters its third month this week! While that may be hard to believe, we’re nearing the season’s halfway point, and every week the postseason picture gets more and more interesting. The parity in this year’s NFL is apparent and has made for entertaining games week after week. Which teams helped themselves the most in the hunt for the playoffs this week? Here’s a look at what did (and didn’t) move the needle in Week 8, using insights from SI Tickets’ postseason reservations. The…