For the Sooners, Anne Tanquay had an even-par 70 and 2012 NCAA individual champion Chirapat Jao-Javanil had 72. The team also had to count a 78.
UCLA was led by a 71 by Ai Gulugian and 72 from Louise Ridderstrom.
Kaui came into the sixth hole, her 15th, at 4 under, but her tee shot went right of the green into a pond, leading to double bogey. She bounced back on the par-4 eighth hole, hitting a 3-wood from about 185 yards to 4 feet for birdie.
The Sooners struggled on the difficult closing holes, going from 1 under to 8 over in the final hour.
The par-3 sixth hole was the most difficult on the course, with 36 bogeys, 21 double bogeys and 13 triple bogeys or worse against eight birdies. But there was also a hole-in-one recorded by Dana Finkelstein of UNLV.
“I hit a little baby 5-wood and knocked it down under the wind,” Finkelstein said. “It took a couple of bounces on the green and disappeared.”
“The last four holes are playing very tough,” OU coach Veronique Drouin-Luttrell said. “Everyone was giving shots back on that stretch.
“You’re just trying to make some pars at that point. But we’re happy to be where we’re at and looking forward to tomorrow.” The 72-hole tournament continues through Friday.