Twice (1967-68) selected All-Big Eight Conference, Douglass was named to both United Press International (UPI) and Kodak All-America teams in 1968. Douglass, in his senior season, directed the Pepper Rodgers-coached Jayhawks to a 9-2 record, a share of the Big Eight Conference title and a spot in the 1969 Orange Bowl. Douglass passed for 1,316 yards and 12 touchdowns his final year as a Jayhawk. He passed for TDs in six consecutive games in 1968 which represents a school record. He ranks eighth all-time in career passing yardage with 2,817 yards. His 3,832 yards in total offense qualifies as the ninth-best mark in KU history and he was responsible for 39 touchdowns during his career, a mark that ranks fifth on KU's all-time listing. Douglass was selected to play in the Senior Bowl, American Bowl and the College All-Star Game in Chicago following his senior season. He earned most valuable player honors in the American Bowl. Douglass played professionally in the NFL for 13 years with Chicago, San Diego, New Orleans and Green Bay.