Drulis made his professional debut in the NFL in 1942 with the Chicago Bears but spent the next two-and-a-half seasons in military service during World War II.
During his tenure as secondary coach of the St. Louis Cardinals, Drulis devised a play that called for one of the safeties to take part in a blitz, code-named "Wildcat."
Largely due to the play, Wilson blossomed into one of the greatest defensive players in NFL history, and became so identified with it that "Wildcat" became his nickname.
[3] Chuck's wife, Dale Drulis, was an artist who was commissioned to create the artwork at the Pro Football Hall of Fame in Canton, Ohio.
On August 23, 1972, Drulis suffered a massive heart attack aboard the chartered flight transporting the Cardinals to Houston for an exhibition game vs. the Oilers the next night.