SDSU has reached the Football Championship Subdivision playoffs 10 consecutive seasons, reaching the FCS semifinals for the fourth time in five years in 2021.
Trae Waynes intercepted Tommy Armstrong's pass with 30 seconds remaining, and No. 10 Michigan State held off a furious Nebraska rally, beating the No. 19 Cornhuskers 27-22 on Saturday night.
Oklahoma State's Mike Gundy made a questionable coaching decision in the final seconds of the first half.
Iowa State athletic director Jamie Pollard believes the officials made an incorrect call that let him off the hook for it.
Ameer Abdullah ran for 208 yards and three touchdowns, Imani Cross added a career-high 109 yards and a TD, and No. 21 Nebraska beat Illinois 45-14 on Saturday night.