During the 1968 Baltimore Colts season Earl Edwin Morrall filled in for a quarterback that was most valuable player in what years?
Earl Morrall:  During the 1968 Baltimore Colts season, he filled in for an injured Johnny Unitas leading to an NFL championship shutout victory and Super Bowl III, and for the 1972 Miami Dolphins season (both under coach Don Shula) he filled in for an injured Bob Griese leading to Super Bowl VII and the only perfect season in NFL history. Johnny Unitas:  He was a record-setting quarterback, and the NFL's most valuable player in 1957, 1959, 1964, and 1967.
1957, 1959, 1964, and 1967