An Oklahoma native, with a folksy, down-home style, Moore became the lead broadcaster for the Kansas City A's in 1962, when owner Charles O. Finley inserted him to replace Merle Harmon.
During Moore’s tenure, he had a number of co-announcers with him in the booth, including Harry Caray, Bob Elson, Al Helfer, Red Rush and Jim Woods, all of whom had achieved fame as major-league broadcasters elsewhere before joining the A’s, and Jon Miller, who went on to success with the Orioles and Giants.
"[4] which he uttered many a time while calling games during the early years of A's notables such as Reggie Jackson, Catfish Hunter, Bert "Campy" Campaneris, Mark McGwire and José Canseco.
[5] Moore was part of NBC's national broadcast team when the A's appeared in the World Series against the Cincinnati Reds (1972), New York Mets (1973) and Los Angeles Dodgers (1974) and won all three.
Today, Moore frequently returns to Oakland for special occasions put on by the A's honoring the past, including jersey retirements, ceremonial first pitches, autograph signings and anniversary events.