CHAMPAIGN -Mike Davis scored 20 points and No. 20 Illinois had five players finish in double figures in a 79-67 victory over North Carolina on Tuesday night in the ACC/Big Ten Challenge. Demetri McCamey had 17 points for the Illini (7-1) while Mike Tisdale had 14, Jereme Richmond 12 and D.J. Richardson 11.North Carolina center Tyler Zeller picked up three early fouls and spent more than 9 minutes of the first half on the bench while the Illini built a 37-30 halftime lead.Illinois opened the second half with an 8-2 run and never led by less than nine points the rest of the way.John Henson led the Tar Heels (4-3) with 16 points while Zeller finished with 10.