Kyle Vantrease threw four touchdown passes, including a 22-yarder to Derwin Burgess Jr. with 1:10 remaining, and Georgia Southern beat No. 25 James Madison 45-38 to spoil the Dukes’ first appearance in the AP Top 25.

Spencer Petras threw for 224 yards and two touchdowns and No. 5 Iowa needed a second-half comeback to defeat Colorado State 24-14.