Oak Forest won its first regional since 1997, beating out Richards 189-147.
Pacing the Bengals were champs Ryan Burton (29-6) at 125, Ryan Nelligan (19-12) at 140, Kevin Loranger (25-11) at 145 and Lenny Kuspa (30-7) at 152.
Richards' winners were Joel Frias (27-10) at 119, Dion Willette (23-11) at 135, Pat Kush (17-15) at 215 and Andy Crivallone (19-13) at heavyweight.
Bowen had titles from Matthew Jefferson (21-11) at 112 and Craig Parker (3-0) at 171, while Evergreen Park got firsts from Jesse McLain (28-2) at 103 and Donnie Bachler (18-13) at 130. Also winning were Harlan's Melvin Johnson (14-3) at 160 and Ag. Science's Mike McNeil (23-4) at 189.