Key bracket games for Top 25 teams 

November, 11, 2011
11/11/11
8:10
AM ET

Barnes/HensonLance King/Icon SMINo. 1-seed hopes for John Henson, Harrison Barnes and UNC will once again run through Duke.
Yes, it's early in the college basketball season, but when it comes to Selection Sunday, games in November can weigh just as heavily on seeding as games during Championship Week.

With that in mind, I'm taking a look through the ESPN.com/ESPN The Magazine Top 25 preseason rankings to see which games on their schedules could have the biggest bracket impact. The bolded battles are the clashes I see as the biggest of the season.