Aaron Armstead scored 17 points, going 4-of-5 from 3-point range.
Tre Demps scored 17 points and Northwestern beat Western Michigan 67-61 on Saturday afternoon.
Darius Paul had previously been suspended from the Illini after a run-in with police.
Shayne Whittington scored 21 points Tuesday and David Brown added 18 as Western Michigan downed Northern Illinois 61-56.
David Brown scored 26 points, hitting 5 of 8 from 3-point range, as Western Michigan held on for a 74-71 win over Northern Illinois on Sunday.
Twice in the first half, Western Michigan jumped out to a lead and began to dream of what might be.
David Brown scored 13 points and Western Michigan held Northern Illinois to its lowest point total in 67 years, defeating the Broncos 71-34 Saturday night.
According to a report, Illinois has hired former Western Michigan head coach Bill Cubit to be the team’s offensive coordinator.
The Illini opened up a 17-0 lead but their offense stalled when quarterback Nathan Scheelhaase left the game with an ankle injury late in the third quarter.
Troy Pollard rushed for a career-high 133 yards and No. 24 Illinois needed all three of Derek Dimke’s field goals Saturday to survive Western Michigan 23-20 and improve to 4-0 for the first time since 1951.