The Sooners allowed the fewest points ever by a Big 12 team in a conference game, and No. 24 Oklahoma defeated Texas Tech 81-36 on Wednesday night. Ryan Spangler scored a season-high 20 points, Buddy Hield scored 15 points and Isaiah Cousins added 13 for the Sooners (13-7, 4-4 Big 12), who had lost 4 of 5, with three of the losses against ranked opponents. Tech (11-10, 1-7) was coming off a win over No.