Jared Barnett threw three touchdowns to Josh Lenz, who later had a scoring toss of his own on a trick play, leading Iowa State to a 37-23 win at No. 15 TCU Saturday afternoon to end the Horned Frogs' FBS-best 12-game winning streak.
It was the first Big 12 home game for conference newcomer TCU (4-1, 1-1), which played without suspended quarterback Casey Pachall. The Frogs had won a nation-best 25 conference games in a row, the first 24 while winning the Mountain West championship each of the last three seasons.
Barnett was 12-of-21 passing for 183 yards and ran nine times for 30 yards in his first start this season for the Cyclones (4-1, 1-1). Lenz had TD catches of 51 and 74 yards in the first quarter.
Trevone Boykin started for TCU and was 23-of-40 passing for 270 yards with a touchdown and three interceptions.