Brandon Paul added 14 points and six assists for the Illini (2-0). Akeem Johnson led St. Francis (1-1) with 13 points, Ben Mockford added 12 and Jalen Cannon had 11 rebounds.
Illinois couldn't shake the Terriers early, but closed the first half on a 15-0 run to take a 45-25 lead. The Illini held St. Francis scoreless for 7:11 during the spurt.
Illinois had only eight turnovers, something that concerned first-year coach John Groce during exhibition play.