Mac McClung poured in a tiebreaking jumper with 2.2 seconds to play as part of his 22 points, and No. 15 Texas Tech earned a 79-77, come-from-behind win over No. 4 Texas on Wednesday in Austin, Texas.A 3-pointer by Greg Brown III gave the Longhorns a 74-71 advantage with 2:58 to play. After a layup by Kevin McCullar Jr. cut the Red Raiders’ deficit to one point, Texas’ Courtney Ramey hit a 3-pointer from the corner.However, the endgame belonged to Texas Tech. Two McClung free throws followed by a layup from the Red Raiders’ Terrence Shannon Jr. after a steal by Kyler Edwards tied the game at 77 with 44 seconds to play.After a timeout, Texas’ Matt Coleman III missed a 3-point attempt, giving McClung an opening to convert his game-winner.Coleman had a good look at a 3-pointer in Texas’ final possession, but the shot missed.McCullar, a sophomore, added a career-high 16 points for the Red Raiders (11-3, 4-2 Big 12), who have won three consecutive games and five of the past six. Shannon had 14 points and Marcus Santos-Silva scored 12 for Texas Tech.