An active and potentially impactful Week 4 college football schedule kicks off today around the country, with marquee matchups involving ranked teams in the SEC, Big Ten, and Big 12. Here is your guide to the most important games on the schedule today involving schools in the top 25 rankings,

Get everything you need to know about the latest AP Top 25 rankings below. Others receiving votes: Memphis 77, Boise St. 62, Syracuse 62, UNLV 54, Boston College 47, Washington St. 30, Arizona 15, Iowa 15, Indiana 13, California 11, Liberty 10, Toledo 9, UCF 6, South Carolina 3, North Carolina 3, Arizona St. 3, BYU 2, Pittsburgh 1