Boykin scored on first-half runs of 18 and 3 yards while finishing with only 29 yards on five carries. Casey Pachall was 20-for-36 for 245 yards and two interceptions in his third game back from a broken arm for Texas Christian (4-6, 2-5 Big 12).

Aaron Wimberly was held to 28 yards rushing on 18 carries for Iowa State (1-8, 0-6) after missing the previous two weeks with a sore hamstring. Redshirt freshman Grant Rohach struggled again, finishing 18-of-39 for 148 yards after getting the starting nod over Sam Richardson.

TCU opened the game with Boykin's first score in the first quarter following a Horned Frogs' recovery of a fumbled punt at the Iowa State 23. The Cyclones tied it 2:16 into the second quarter on Richardson's 15-yard touchdown run before Boykin put TCU back on top 14-7 with his burst into the end zone midway through the second quarter.

DeVondrick Nealy opened the second half for Iowa State by torching TCU for a 98-yard kickoff return for a touchdown and the Cyclones went ahead 17-14 with 1:33 left in the third quarter on Cole Netten's 35-yard field goal. Iowa State's defense stiffened in the second half, with TCU's first five possessions ending in punts and a Jeremiah George interception before the Horned Frogs drove 58 yards in 10 plays on their final possession to win it.

GAME NOTEBOOK: Horned Frogs WR Brandon Carter had six catches for a season-high 93 yards. ... WR E.J. Bibbs had seven catches for 63 yards for the Cyclones. ...TCU won for the first time in four conference road games this season to improve to 17-4 in its last 21 conference road games.