Free NFL Betting Odds & Picks for the Seattle Seahawks vs. Arizona Cardinals week 17 matchup. The Seahawks are a 2.5 point underdog. The over/under is 41. The Hawks are 1-4 SU and ATS in their last five trips to Arizona. The Cardinals are 4-1 SU in their last five games overall and at home. Can Earl Thomas and Kam Chancellor stop Larry Fitzgerald? That’s the key.