The number of serious College Football Playoff contenders is dwindling by the week.
Week 4's trio of marquee games will help narrow down the contenders for the first-ever 12-team playoff even more.
Five teams ranked between No. 11 and No. 20 in the latest AP Top 25 take part in those contests. The sixth-ranked Tennessee Volunteers are the only Top 10 squad involved in a marquee matchup.
The Big 12 title race will come into picture in Stillwater, where the Oklahoma State Cowboys host the Utah Utes.
At the same time, the Michigan Wolverines' playoff hopes will be on the line in a home matchup with the USC Trojans.