HOUSTON (AP) — Caleb Mills came to life at the right time, sparking a huge second half by Houston. Mills scored 22 of his 27 points in the second half to lead No. 22 Houston to a 76-43 win over Tulsa on Wednesday night. Mills, who is a redshirt freshman, had scored 10 points combined over his previous two games on 3 of 21 shooting and 0 for 8 on 3-pointers. “Freshman hit that wall a little bit…