 In 1972, Gilliam led the NFL in yards per catch (22) and finished 2nd in receiving yards (1,035) and receiving yards per game (73.9).In 1973, he again finished 2nd in receiving yards (907) and receiving yards per game (64.8) and was named 1st Team All-Pro by the Newspaper Enterprise Association (NEA) and 2nd Team All-Pro by the Associated Press (AP) and the Pro Football Writers Association (PFWA).He was also named 1st Team All-NFC by The Sporting News and UPI in 1973.