James had three points, three rebounds and an assist during an 11-0 run that turned a one-point lead into a 12-point spread. The sixth-seeded Longhorns (24-8) play third-seeded Baylor (No. 20 ESPN/USA Today, No. 21 AP), a team that beat them twice during the regular season, in the quarterfinals.After Iowa State (15-17), the No. 11 seed, cut the lead to six points at 75-69, Jai Lucas hit a free throw for Texas and missed the second attempt. James grabbed the rebound, and Avery Bradley sank a pair of foul shots to put the Longhorns on top 78-69.Gary Johnson had 15 points and 10 rebounds for Texas.Marquis Gilstrap scored 17 points for the Cyclones, and Craig Brackins added 15.