COLUMBUS, Ohio (WCMH) -- After the final whistle sounds Saturday in No. 1 Ohio State's Big Ten opener at Washington, players might be keeping a close eye on Happy Valley for No. 3 Penn State's game against No. 6 Oregon.

It's just one of a few games this week between ranked teams, and each will impact how the College Football Playoff picture will look by this time next week.

Here is a look at the major changes in the past week, plus what to watch for this weekend.

What changed in the bracket?

NBC4 looks at the AP rankings until the initial official playoff rankings begin in November for playoff projections, and Week 4 may have created the biggest shift.

Two new teams have entered the fray in Oklahoma and Texas Tech. The Sooners are 4-0 with wins over Michigan and Auburn, putting them a

See Full Page