MANHATTAN, Kan. (AP) — Brock Jensen backed into the endzone for the go-ahead touchdown with 28 seconds left, and North Dakota State upset defending Big 12 champion Kansas State 24-21 Friday night.

The senior quarterback led the Bison on an 18-play, 80-yard march that ate up 8½ minutes, helping them convert four third downs along the way, and left the Wildcats with virtually no time left to set up a tying field-goal try.

Jensen threw for 165 yards and two touchdowns for Bison, the two-time defending FCS national champions who have beaten Colorado State, Minnesota and Kansas in the last three years.

Jake Waters threw for 280 yards and two touchdowns for the Wildcats, who built a 21-7 lead by the third quarter before everything fell apart. Waters was picked off twice, including a desperation heave after the Bison had taken the lead to wrap up the biggest win in North Dakota State history.