The Sooners trailed 72-68 with 1:30 left after Buddy Hield’s 3-pointer.
Baylor gave OU an even better chance when Royce O’Neale airmailed a pass over the head of Gary Franklin on the next possession.
But Hield passed on a look of his own to kick to freshman point guard Jordan Woodard up top. Woodard’s 3-pointer clanged away, Isaiah Austin grabbed the rebound and Baylor hit a pair of free throws on the other end to extend the margin.
“Jordan had a better shot,” Hield said. “I forced a couple shots earlier, and I was trying to lock in and focus. Jordan had a great look. I thought it was a dagger, and it didn’t stay in. We just need to make shots.
“Everybody didn’t come out ready to make shots. I was short all game and I was just starting to pick it up a little bit, but we’ve got to lock in and fight. We can’t be having breakdowns like this anymore.”
The Sooners did cut it to three on Woodard’s 3-pointer with 2.9 seconds left, but Brady Heslip’s free throws ended it.
Cam Clark had 19 points to lead Oklahoma, and Hield added 15. But the pair combined to shoot just 14 of 34.
“I feel like this is a good loss for us,” Hield said. “Even though we wanted to win the Big 12 championship, I feel like we needed to practice hard and catch ourselves. We’re not as good a team as we think, and we need to get back on track and just get ready to compete hard. I feel like next game, the guys will compete hard.”