John Duncan is pictured playing for Tottenham Hotspur during their 3-0 win against
 Wolverhampton Wanderers.
 
    
        
            |   | 
        
        
            | Spurs: | 
              1974-1975 | 
                Played | 
              28 | 
                Scored | 
              12 | 
              goals | 
              (Division 1) | 
        
        
            |    | 
              1975-1976 | 
                Played | 
              37 | 
                Scored | 
              20 | 
              goals | 
              (Division 1) | 
        
        
            |    | 
              1976-1977 | 
                Played | 
              9 | 
                Scored | 
              4 | 
              goals | 
              (Division 1) | 
        
        
            |    | 
              1977-1978 | 
                Played | 
              27 | 
                Scored | 
              16 | 
              goals | 
              (Division 2) | 
        
        
            |    | 
              1978-1979 | 
                Played | 
              2 | 
                Scored | 
              1 | 
              goal | 
              (Division 1) | 
        
        
            |   | 
        
        
            | Transferred to Derby County in September 1978 | 
        
        
            |   | 
        
        
             1979–1981    Derby County    36    (12) 
            1981–1983    Scunthorpe United    9    (0) 
              
              
            Teams managed. 
            1981–1983    Scunthorpe United 
            1983              Hartlepool United 
            1983–1987    Chesterfield 
            1987–1990    Ipswich Town 
            1993–2000    Chesterfield 
            2007–2011    Loughborough University  
             |