Born 6 February 1935 in Winchburgh, West Lothian – died 30 August 2004.
Duff joined the Posh when Jack Fairbrother signed him in May 1963 and he soon established himself as Posh’s regular keeper behind a defence that had ‘wobbled’ since Jack Wall’s departure a year earlier. Injury restricted his appearances early in the 1964/65 season with Nigel Sims covering in for him in goal, however he recovered in time to help the Posh reach the quarter finals of the FA Cup in 1965. After losing his place to Tony Millington in the 1966/67 season Willie left the club in the summer of 1967.
In total Willie made 118 Football League, 9 FA Cup and 10 League Cup appearances for the Posh.
Did you know: Whilst at Hearts Willie won the 1954/55 Scottish League Cup when they defeated Motherwell 4–2 in the final (Hearts first trophy for 48 years). The following year, he added a Scottish Cup winners medal to his collection as Hearts beat Celtic 3–1 in the final.