Seth Doege threw seven touchdowns, three in overtime, and No. 18 Texas Tech won 56-53 at TCU after blowing a late 10-point lead Saturday.
The game-winning pass was an 8-yard throw to Alex Torres, which came four plays after Jaden Oberkrom's school-record sixth field goal had put TCU ahead. Both teams scored touchdowns in the first two overtime periods.
TCU (5-2, 2-2), the Big 12 newcomer, has lost consecutive home games for the first time since 1999. After losing the final two home games in 1998, they lost the 1999 season opener at home.
Doege completed 30 of 42 passes for 318 yards and Texas Tech (6-1, 3-1) is already bowl eligible a year after its first losing season since 1992.
TCU redshirt freshman Trevone Boykin was 26-of-44 for 332 yards with four TDs and two interceptions.