A 1951 graduate of South Pasadena High School where he was a multi-sport athlete, Giddings played college football for the California Golden Bears under head coach Pappy Waldorf.

After his time with the 49ers, Giddings was the head coach of The Hawaiians of the short-lived World Football League (WFL), in 1974 and 1975.

[2] In 1976, Giddings was the NFL's first pro player personnel director while also serving as an assistant offensive line coach for the Denver Broncos.

"[5] From 1982 to 1985, Giddings returned to the sideline as head coach of Newport Harbor High School's varsity football team.

In four seasons, Giddings compiled a record of 34 wins, 12 losses, and three ties with four CIF-Southern Section playoff appearances and three Sea View League titles.