"This is huge," said guard Cade Davis. "I don't know how long it's been since we've won a Big 12 game, but now I don't have to worry about it because now we got one."
It's actually been 345 days since the Sooners have been on top of a conference game and at the beginning, it didn't look convincing that they would do so this time, either.
The Sooners struggled out to an early 9-4 lead, despite scoring the next five points to notch it up at nine.
Then Tech twice extended its lead to six in the opening half, the latest a 17-11 advantage at the 12:04 mark in the first half.
That's when OU turned it on, scoring eight of the game's next nine points to take a 19-18 lead of its own, its first in 74:06 of conference play, part of a 20-5 spurt that turned that six point deficit into a seven point cushion.
From that point on, the Sooners never trailed again.
They defended well, forcing Texas Tech into 15 first half turnovers and 34.6 percent shooting in the opening 20 minutes and led 31-24 at intermission.
"I thought our defensive effort the last about 10 or 12 minutes of the first half was about as good as we have had all year," said OU head coach Jeff Capel. "We were very active getting our hands on balls, getting deflections and we took two charges down that stretch. We had them stuck on 17 points for a while. So, I was really pleased with that."
And they were efficient at the other end, especially in the second half when they canned 56 percent of their looks from the field.
"They had 18 points off of turnovers," said Tech coach Pat Knight. "You subtract that and your defense really isn't that bad."
Indeed, that was a big reason why OU was able to leap out to as much as a 14-point margin with 9:09 to go.
And they rode that lead to the finish line, leading by no less than six the rest of the way.
Davis led all five Sooner starters in double figures, netting 25 points on 7-for-12 shooting, including four triples.
"That's very important that we have a balance on our offense," Fitzgerald said. "It's not one person just scoring, it's a team effort. My job is to get my teammates open on picks and screens any way possible, and it's their job to get me open too. So, we're just relying on each other for us to score."
The Sooners outshot Tech 48 percent to 39 percent despite being out-rebounded 37-31.
But they were more sound in taking care of the ball, committing only 17 turnovers to 20 for Tech.
OU next takes on Colorado at 12:30 p.m. CT Saturday at Lloyd Noble Center, when it tries to improve upon its 9-9 record.