Brittany Atkins buried back-to-back 3s, and Martin's layup put Oklahoma State up 46-37 with just over 13 minutes left. Iowa State had a number of chances to make plays that could have tipped momentum in its favor, but Bias and the Cowgirls seemed to always have the answer.
"Quite frankly, we played as well as we can possibly play, and that's what it takes to win up here. Such a tough venue," Littell said.
The Cyclones didn't shoot particularly well from the field in the first half.
But they were great from the line — and that was enough for a 32-29 lead.
Iowa State was intent on pressuring Oklahoma State's interior defense, driving repeatedly to the basket. That was a big reason why they got to the line 21 times in the first 20 minutes. They made 16 of those free throws, which helped cover for Christofferson's cold start from the floor.
Christofferson eventually got untracked. But she also picked up her fourth foul with 7:38, and Iowa State's offense wasn't the same without their star on the floor.
The Cyclones also entered play with over 10 made 3s a game, and they couldn't make up for their struggles from beyond the arc.
"They were good, and they were committed to taking away the 3," Fennelly said. "So when we did have a good look, maybe our feet weren't as set. They've always guarded us well. That's a very, very good, very well-coached basketball team. A team that knows how to play the way they need to play to win games. They're 14-1 for a reason."
One of the biggest reasons was Bias, who was 8 of 11 from the field and had four assists against just one turnover in 34 minutes.
"We believe in her," Littell said.