Ken Gray was drafted by the Green Bay Packers in 1958 but was unable to make their roster. The Chicago Cardinals took a shot on him, using him at Defensive End as a rookie, but the season after, he was moved to Right Guard, a position he would thrive in.
The Cardinals relocated to St. Louis in 1960, and while Gray was not a star in Chicago, he would become one under the Arches. Gray went to his first Pro Bowl in 1961 and added five more (1963, 1964, 1968, 1967 & 1968) with three All-Pros along the way. Arguably the Cardinals' best Offensive Linemen in the 1960s, he began the next decade with Houston, where he played one year before retiring.