Keith Peacock
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Keith Peacock is an English former footballer and manager. On August 21 1965, while playing for Charlton Athletic, he became the first substitute ever to be used in the Football League.
Peacock was manager of Gillingham between 1981 and 1987 and later served as assistant manager at Charlton Athletic before stepping down after the resignation of Alan Curbishley. He worked as a scout for West Ham United before being appointed assistant manager in October 2006 following the appointment of Peter Grant, the former assistant, as manager of Norwich City.
His son Gavin also became a professional footballer.