Keith Stuart Hackett (born 22 June 1944) is an English former football referee, who began refereeing in local leagues in the Sheffield, West Riding of Yorkshire area in 1960. He is counted amongst the top 100 referees of all time in a list maintained by the International Federation of Football History and Statistics (IFFHS).He reached the Northern Premier League and became a Football League linesman in 1972. Three years later he advanced to the Supplementary List of referees and one year later in 1976 to the full List at the age of only thirty two. He made progress and in 1979 was senior linesman to Ron Challis in the FA Cup Final. The next season, he took charge of an FA Cup semi-final between Arsenal and Liverpool. The match required a replay, which he also handled, but that ended all-square as well, and two further replays were required to separate the teams. Wikipedia
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