The Illinois State Amateur Championship, conducted annually by the Chicago District Golf Association, was first played in 1931 at Quincy Country Club. Initially conducted at match play until 1963, the event is now a 72-hole stroke play competition contested over three days. It is widely considered the premier amateur golf event in the state. Since the Championship was first conducted at stroke play, 46 different golfers have hoisted the Louis L. Emmerson trophy, several of which are current or former members of the PGA Tour. Spring Grove native and University of Wisconsin golfer Jordan Hahn held on to capture the 2018 title at Bloomington Country Club.