Charlton reached the 1946 FA Cup Final, but lost 4–1 to Derby County at Wembley. Charlton's Bert Turner scored an own goal in the eightieth minute before equalising for the Addicks a minute later to take them into extra time, but they conceded three further goals in the extra period. When the full league programme resumed in 1946–47 Charlton could finish only 19th in the First Division, just above the relegation spots, but they made amends with their performance in the FA Cup, reaching the 1947 FA Cup Final. This time they were successful, beating Burnley 1–0, with Chris Duffy scoring the only goal of the day. In this period of renewed football attendances, Charlton became one of only thirteen English football teams to average over 40,000 as their attendance during a full season. The Valley was the largest football ground in the League, drawing crowds in excess of 70,000. However, in the 1950s little investment was made either for players or to The Valley, hampering the club's growth. In 1956, the then board undermined Jimmy Seed and asked for his resignation; Charlton were relegated the following year.