"We just got whupped for sure," Eustachy said. "That was the best defense we've seen all year. Their defense really bothered us, and their pressure took us out of how we run our offense."
After a lackluster first half that saw No. 20 Tech shoot only 33 percent from the field, the Raiders (16-4, 5-3 Big 12) hit 11 of their first 12 shots over the opening nine minutes of the second half and went on to lead by as many as 28 points. Tech shot over 60 percent in the second half.
The Cyclones (9-14, 1-8) shot just 24.2 percent from the field (15-for-62).
Knight said the Cyclones' poor shooting was the result of his team's strong defensive showing, one that was a team effort and not just a couple of individuals.
"When you miss a shot, the defense has something to do with it," he said. "They make you adjust a little bit, you don't have the right follow-through, you don't have the right whatever."
Knight said some of his players were deflated at halftime because they had missed so many shots as Tech was 9-for-27 in the first half.
He said he told them they had gotten good shots and to focus on how well they had played defensively, holding the Cyclones to just 14 points in the first half.
"A team like ours that struggles if we don't play well defensively just has a tough time grasping the significance of defensive play," he said.
The Raiders were coming off a flat performance Wednesday night at Nebraska where they lost 80-69. That loss came two days after Tech entered the Top 25 for the first time in five years.
"I don't think we needed the Nebraska loss, but we learned from it," said Kasib Powell, who led Tech with 22 points and had eight rebounds. "And if we did (play them) again, we wouldn't play the same way we did."
Andre Emmett scored 13 points and Andy Ellis added nine for the Raiders, who led 26-14 at halftime. It was the lowest point total in a first half this season for Tech, who trailed 50-28 against Oklahoma on Jan. 12.
Sloppy play and cold shooting dominated the first half for both teams. Combined, there were more turnovers (19) than field goals. Tech went 9-for-27 from the field, while the Cyclones were 6-for-35.
Tyray Pearson had 13 points and 12 rebounds for Iowa State, while Shane Power added eight points.
The Raiders broke a three-game losing streak against the Cyclones, who have already lost more Big 12 games this season (eight) than the two previous seasons combined (five).
"I don't think we'll play a tougher opponent all year, and we caught them on a very difficult night, in my opinion," said Eustachy, who is in his fourth year at Iowa State "This is as bad as we've been hit since I've been here."