Tackles for losses are down from almost eight a game (fourth in the country) to five, and the Illini are sacking the quarterback 1.5 times a game (81st in the nation) a season after they averaged 3.5, good enough for sixth in the country.
"Last year we blitzed a lot more with our linebackers and this year, you know, they're sitting back, and they've got to read," Spence said. "We were able to bring pressure form just about anywhere, from the corners. ... We just brought it from a lot of different angles. That's what we were used to."
Players have asked the defensive coaches to consider blitzing more, he said.
"I mean, we ask, but at the end of the day they hold the power. All we can do is go out and do what they tell us to do," he said.
Former defensive coordinator Vic Koenning's defenses specialized in high pressure that led to sacks and big plays that regularly left opponents facing long yardage on second or third down. Koenning left when Ron Zook was fired, and the approach under new coach Tim Beckman and defensive coordinator Tim Banks has so far been more reliant, as Spence said, on reading and reacting.
Beckman said Monday that part of the credit for Illinois' problems has to be given to the opposition — fast-paced spread offenses run by Arizona State and Louisiana Tech.
The Bulldogs forced Illinois to think about the run and use safeties to cover it, Beckman said. Then Louisiana Tech's receivers — who frequently found space behind Illinois' secondary and scored on pass plays of 78, 38, 27 and 21 yards — ran wild.
"They're No. 3 in (the country in) scoring, they force you at times to play man-to-man coverages," Beckman said.
Illinois is also thin at safety, with both Steve Hull and Suppo Sanni injured, but Beckman said everyone simply needed to play better.
Spence said he's looking forward to getting into the Big Ten, where Illinois won't see nearly as much of the spread.
"There's not a lot of trickery like the past (few) weeks," he said.
Illinois' biggest troubles last weekend were on defense, but quarterback Nathan Scheelhaase's sprained ankle is still a problem. Beckman said Scheelhaase will be his starter if he practices well the rest of the week, and the junior quarterback said his ankle is improving.
"Honestly, yesterday, when we had our lift and run, it felt as good as it's felt," Scheelhaase said.
Beckman pulled Scheelhaase after the first quarter against Louisiana Tech. On his last play, the normally swift quarterback clearly couldn't outrun a linebacker who caught him and stripped away the ball for one of the Illini's six turnovers. Scheelhaase was replaced by Reilly O'Toole.