Cohn first found success at the Open Championships as a member of the 1966 Team All-Events champion, and he had his breakout performance at the 1971 event in Detroit as he captured the Regular Singles and All-Events titles with scores of 738 and 2,063, respectively.
He added another Team All-Events title at the 1973 event in Syracuse, New York, and placed in the Top 10 of every event, including a second-place effort in Regular All-Events with 2,060. In 42 career appearances at the Open Championships, Cohn held a lifetime average of 193.9.
In 1977, Cohn helped Team USA capture gold medals in the five- and eight-man team events at the Pan American Bowling Confederation Championships in Panama City, Panama. Cohn also is a member of the Illinois State, Chicagoland and Greater Calumet Bowling Association Halls of Fame.
Services are pending.