Game day preview Purdue at Illinois; 3:15 p.m., Saturday (BTN)

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Oct. 3—Beat writer Scott Richey previews the Illini's rivalry game against the Boilermakers at Gies Memorial Stadium in Champaign, as Illinois tries to hold on to the Cannon trophy for another year:

Barry Lunney Jr.'s status as the longest-tenured offensive coordinator in the Big Ten has lent a certain amount of continuity to the Illinois offense even as the coaching staff and roster have changed. Stability that's more important moving forward this season after the change in leadership at the top of the defense following Bobby Hauck's departure. Lunney's offense has been asked to carry a heavy load, and that likely won't change.

"(Lunney) does an unbelievable job knowing our players and when to maximize our players' strengths and minimize their weaknesses," Illinois quarterbacks coach Art Sitkowski said what about has helped the offense succeed. "He puts our players in position to have success. Also, I really believe it's the staff around (him). Coach Lunney does an unbelievable job of empowering everybody on our offensive staff. It doesn't matter if you're the lowest guy on the totem pole or the highest guy on the totem pole. He allows you to have a voice. As a person that's in that staff room, that makes you feel important. That's what great leaders do."

Brayden Trimble will never be mistaken for some of the bigger wide receivers in the game. But the 6-foot-1, 195-pound sophomore out of Mount Zion packs some strength onto his somewhat slender frame. Strength that's helped him catch 13 passes for 113 yards though four games in his first full season in Illinois' wide receiver rotation as the Illini look for more consistentcy from its pass catchers beyond Collin Dixon.

Strength that's impressed the Illini staff in other areas, too, during Trimble's first extensive playing time.

"That sucker's physical," Illinois wide receivers coach Justin Stepp said. "That's the one thing that's stood out since he got here. He's not afraid to put his face in the fan, and I love that. I'll celebrate a daggum block before I will something else. I think he believes that, too. Our whole room is like that. He had several blocks against Southern Illinois where I was like, 'Golly, that was kind of nasty.' I think he takes a ton pride in that. We talk all the time about it takes zero talent to play hard, and that kid's the definition of that. He's also really talented."

Bret Bielema mutually parting ways with his defensive coordinator roughly 24 hours after Illinois lost at Ohio State sent ripples 90 miles east to West Lafayette, Ind. Purdue coach Barry Odom told reporters earlier this week he didn't expect the Illini "to miss a beat" following whatever changes Bielema might make defensively.

Changes Odom sort of anticipated either way ahead of Saturday's rivalry game in Champaign with the Boilermakers coming in with a 1-3 record after a 52-38 loss at UCLA in their Big Ten opener.

"There's always going to be some changes within schematics as you get into the game," Odom said. "I expect nothing different than that for this week. There will be some similarities, I'm sure, with what they've done, and there will be some tweaks just like there is every week. Game planning for us, you look to try to find ways and answers versus anything you're going to get. I think we got a really good start with both sides of the ball and special teams for what we need to do to have success and put our players in position to do well."

This is straightforward. Fresh off four games where several issues persisted — missed tackles, poor communication, anemic pass rush — Illinois made a change. Hauck apparently decided it was best for him to leave the program, and now, the Illini will move forward with a defense that's yet to truly prove itself and is now missing the coach that brought it to Champaign. Building confidence in whatever the defense looks like moving forward is Bielema's first challenge. Belief appeared to be an issue through four games, and mistakes compounded from there.

Aidan Laughery's third career 100-yard game — and first since the 2025 season opener — helped the Illini put together their most effective rushing performance of the season last Saturday at Ohio State. The run game remains a point of emphasis for Illinois as a true complement to how quarterback Katin Houser has fared in the passing game. Saturday's game against Purdue provides an opportunity for the Illini to build off what they started in Columbus, Ohio. The Boilermakers rank 129th nationally in rushing defense, allowing 199.5 yards per game.

Playing mostly penalty free doesn't automatically lead to success — a one-win Rutgers team is one of the least penalized teams in the country — but limiting those transgressions is still important. While Illinois hurt itself with multiple ill-timed penalties in its Week 2 home loss against Duke, the Illini have only been flagged for 19 penalties through four games, tying them for the 16th fewest nationally. Seven against Duke marks the season high, while a single penalty against UAB in the season opener anchors the other end of the spectrum.

whatever tweaks coach Bret Bielema made in the wake of Hauck's unexpected departure actually work. Tweaks, not wholesale changes. The latter might come later this month during the Illini's mid-October bye week but major changes on short notice might only spell disaster. Success this weekend against the Boilermakers, though, still rests squarely on the defense. The Illinois offense and special teams have been good enough (albeit less than perfect), but a defense that's been far from complementary was a clear issue.

Purdue will win if …

if its own struggling defense can show real (and perhaps drastic) improvement. The Boilermakers rank 136th nationally — i.e. third from last — in scoring defense giving up 39.5 points per game. They rank only slightly higher, tied for 131st, in total defense at 446 yards per game allowed. That's negated an impressive start from quarterback Ryan Browne, who is third in the Big Ten with 1,135 passing yards to go with seven touchdowns and just one interception. Purdue is having its own complementary football problems.

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