LaceDarius Dunn hit the go-ahead 3-pointer with 1:12 remaining and Baylor ended a 24-game losing streak against Texas, advancing to the Big 12 championship game for the first time with a 76-70 victory Friday night.
Kevin Rogers scored 20 points and Henry Dugat added 17 as the ninth-seeded Bears (20-13) kept their desperate NCAA tournament hopes alive with their third upset in as many days. The only team to advance to the Big 12 title game with a lower seed was 10th-seeded Missouri, which did it in the tournament's inaugural year in 1997.
No team seeded lower than third has ever won the tournament.
A.J. Abrams scored 20 points to lead Texas (22-11), which had reached the finals the past three years. Damion James added 11 points and Gary Johnson 10.