Texas, Indiana among top-25 teams on upset alert in a Week 6 loaded with College Football Playoff stakes

Five games to watch closely in a Week 6 teeming with upset potential Week 6 brings another round of upset opportunities, including two Big Ten matchups capable of changing the conversation well beyond the weekend and the nation's top-ranked team facing a rivalry bout with a cornered rival opponent. UCLA's trip to Oregon is a narrative-setter. The Bruins have a chance to turn growing respect into something more substantial with a win, while the Ducks will turn to Dylan Raiola at quarterback after Dante Moore was ruled out with a concussion. Matt Rhule has a chance for a signature win at Nebraska against reigning national champion Indiana. The Huskers have spent years waiting for a breakthrough on this stage, but have failed to deliver after every opportunity.

Which favorites should be nervous this week? Here are the games with enough warning signs to demand attention in Week 6. The Sooners could turn the tide on a disappointing start to the season with a win over the hated Longhorns in the Cotton Bowl. For that to happen, Oklahoma needs the best out of John Mateer at quarterback, a player who has underachieved all season so far. Brent Venables said this week his staff evaluated its options under center during the open date ahead of Texas, but stopped short of providing any