Kevin Gemmell A look at a few story lines to keep an eye on this week.1. Offense, offense, offense: Expect some more when USC travels to Arizona in a very intriguing South Division game. USC's passing attack looked stellar last week, albeit against Colorado, but Matt Barkley and Robert Woods looked more in sync than they have all season. Arizona's offense is pretty good, too. But it was their defense that stood up in the second half against Washington and blanked the Huskies. Originally posted by ESPN.com - Pac-12 Blog Click here to view the article.