The 2019 Illinois vs. Wisconsin football game was a regular season NCAA college football game between the Illinois Fighting Illini and the Wisconsin Badgers that took place on October 19, 2019 over homecoming weekend at Memorial Stadium in Champaign, Illinois. In a major upset victory, unranked Illinois overcame a 30.5 point spread and defeated heavily favored Wisconsin, 24–23, to claim their first conference victory of the season.