Freshman guard Zhaire Smith scored a career-high 21 points and No. 7 Texas Tech beat Iowa State 76-58 for its fifth straight win.

The Red Raiders are the first Big 12 team to reach 20 wins overall, and they are tied with No. 10 Kansas atop the conference standings.

After Iowa State scored seven straight points in a 77-second span to get within one after halftime, Smith had a steal that led to his alley-oop dunk. Jarret Culver added 16 points and Keenan Evans 15.