NORMAN, Okla. -- The way Oklahoma coach Kelvin Sampson saw it, Jarrius Jackson and Ronald Ross were just too difficult to defend.
Jackson scored a career-high 32 points, Ross added 14 and Texas Tech upset Oklahoma 88-81 Saturday night to snap the Sooners' 14-game home winning streak.
"Their guards were tremendous," Sampson said. "Jarrius Jackson ... and Ross were a lot tougher than our guys."
Jackson scored 19 points in the first half as Tech built a 14-point lead and never lost control.
A 3-pointer by Lawrence McKenzie brought No. 14 Oklahoma to 43-36 in the first three minutes of the second half, but Devonne Giles answered with seven consecutive points to put Tech (14-5, 6-2 Big 12) up by 14.
Tech stretched its lead to 60-42 after Ross hit a 3-pointer from the right corner to cap a 7-0 run midway through the second half, and Darryl Dora converted a three-point play to make it 67-48 with 7:13 to play.
Oklahoma (17-4, 6-2), which rallied from a 16-point deficit to beat Texas A&M on Wednesday, turned to rebounding and its Big 12-leading defense to make it close.
Taj Gray had six points -- including two offensive rebound putbacks -- during a 10-0 run that brought Oklahoma to 67-58, but the deficit proved too big to overcome.
Drew Lavender's baseline jumper made it 84-78 in the final minute, but Jackson and Martin Zeno each hit two free throws to seal the victory.
"They came back really strong, and I thought they used their guys in and out really well because it kept them as fresh as possible," Texas Tech coach Bob Knight said. "It was obviously a good win for us, and we'll go on from here."
Gray had 20 points and 15 rebounds for his 10th double-double of the season, but also committed seven turnovers. McKenzie scored 16 in his second start of the season, Lavender finished with 13 points and Terrell Everett had 12 points for Oklahoma, which has lost two of three after winning 10 in a row.
"We're not nearly as tough-minded as we were during that stretch," Sampson said. "Sometimes that's the problem with success."
McKenzie said he thought the Sooners could fix their problems by simply playing harder.
"We need to realize that things can go down as quick as they can come up," McKenzie said. "It's a good wake-up call for us."
Tech was able to contain Kevin Bookout, who was averaging 13.3 points and 7.1 rebounds coming in, to four points and no rebounds in only 22 minutes. It was his second consecutive subpar effort following a one-point, two-rebound performance against A&M on Wednesday.
"We just wanted to stay on top of him in the post," said Giles, who scored 17 points before fouling out. "When they did give him the ball, we got the closest man to come down and put a hand in there. We watched a lot of film. We know he likes to put it on the floor a lot."
Tech shot 57 percent -- the highest percentage Oklahoma has allowed this season -- while the Sooners shot 48 percent.
"They've got a lot of guys who can score," Sampson said. "You're going to have to score to beat them. We got separation. We were getting open shots. We've just got to make those against this team."
Tech jumped out to an early 11-point lead after an 8-0 run sparked by Jackson's 3-pointer from the left wing. He added a twisting right-hander, Curtis Marshall put back his own miss and Jackson hit one of two free throws to put the Red Raiders ahead 26-15 with 8:44 to play before halftime.
Jackson added two more baskets in the lane, and Marshall hit two free throws in a string of six consecutive Tech points that extended the lead to 34-20.
The Sooners went without a field goal for a span of nearly seven minutes, but stayed in striking distance by hitting seven free throws. A driving layup by David Godbold brought Oklahoma to 38-29 at halftime.
