NORMAN, Okla. (AP) -- Sherri Coale saw her starters beginning to wear down and Oklahoma's lead dwindling and decided to make a change.
Suddenly, with her reserves leading the way, the third-ranked Sooners were pulling away and putting the first blemish on Kansas State's perfect record.
Courtney Paris had 19 points and 12 rebounds for her 107th consecutive double-double and Oklahoma leaned on its bench to distance itself in the second half for a 64-48 victory Wednesday night against No. 17 Kansas State.
"Both teams looked really tired because of the type of game it had been," Coale said. "When we're able to come in with three guys who are focused and attentive to detail and fresh and full of energy against their guys who are worn down a little bit, I thought it really made a significant difference."
After the Wildcats (14-1, 1-1 Big 12) had trimmed the lead to two, Paris scored inside and Danielle Robinson stole the ball from Shalee Lehning for a fast-break layup. Coale immediately called timeout, and put in a lineup featuring four reserves.
That group put together a string of six straight points, and Ashley Paris' basket inside gave Oklahoma (13-2, 2-0) its largest lead at 53-44 with 6:18 to play. The starters returned and continued to stretch the lead by scoring the final nine points of the game.
"They played hard, made big plays and us sitting on the bench, we were like, `We want to play like that," Courtney Paris said.
Marlies Gipson led Kansas State with 14 points, and Ashley Sweat scored 13. The Wildcats' 14-game winning streak matched the second-best in school history, and was the longest to start a season.
"Tonight what we experienced is that they have that versatility and that stick-to-itiveness that they're going to punish you if you make a mistake and they're going to stick at it. That's why they're No. 3 in the country," Kansas State coach Deb Patterson said.
"They don't get there by quitting after 20 minutes or 30 minutes."
Oklahoma was the first ranked team on K-State's schedule, and the Wildcats didn't have the depth to keep up down the stretch.
Coale went with a grouping that she hadn't used all game, and it paid off with four baskets inside. Nyeshia Stevenson swung around the left baseline for a layup before back-to-back baskets inside by Ashley Paris, prompting the first of two quick timeouts by Patterson.
She burned another one after backup point guard Jasmine Hartman darted under the basket for another layup, and the Sooners' starters were rested by that point for a final charge.
"That wears at you after a while when people are getting quick, easy baskets at the rim," Patterson said. "Emotionally and physically, it deflates you, especially if you're not answering that on the offensive end."
Hartman had been on the bench all game and Jenny Vining had logged only one minute when Coale turned to that duo plus Carlee Roethlisberger with 7:51 to play and the game still in the balance.
"We knew coming in we've got to make a change. If we're going to go in, we've got to make a difference," Roethlisberger said.
Ashley Paris ended up with 18 points, 10 rebounds and a career-high five blocks, and Robinson and Whitney Hand scored 10 points apiece for the Sooners.
Lehning had nine points, 12 rebounds and eight assists for Kansas State, but she had only one basket and committed four of her seven turnovers in the second half.
"I look at my turnovers and it's definitely not what a point guard needs to do," said Lehning, who had two triple-doubles earlier this season.
The Wildcats were able to control the tempo early on with their best-in-the-nation defense that was giving up only 48.7 points per game. The Paris twins did their usual damage with 19 points in the first half, but the rest of their teammates combined for only four as the Sooners trailed 24-23 at halftime.
Gipson and Sweat scored back-to-back baskets to stretch the lead to five at the start of the second half, but the Sooners -- averaging 84.1 points -- charged back with a 13-4 run and led the rest of the way.
"It was just kind of a grinder. We found our way ahead a little bit, and then tremendous play off the bench by Jasmine Hartman, Carlee Roethlisberger and Jenny Vining. I thought when they came in, they really changed the complexion of the game," Coale said.
"They got us some space, a little breathing room and then we relaxed a little bit and began to move on the offensive end and switch the tempo."