After the Second World War, Feyenoord expanded De Kuip to 69,000 in 1949. From the season 1947–48 up to and including 1955–56 no competitive matches were played between these two clubs. This was due to Feyenoord never winning their regional league in this period and hence not reaching the Championship Playoff where they could face Ajax. In order for these clubs to continue playing each other during this period a number of friendlies were arranged. Once the Eredivise was introduced in 1956–57, regional leagues were abolished in favour of a single national league and hence no championship playoffs were needed. Therefore, Feyenoord and Ajax were able to play competitive matches against each other once more. The two clubs have faced off once a year since then. In the season 1960/61 the highest scoring match between these two occurred. The total number of goals scored was 14 where the score was 9–5 in the favour of Feyenoord. This season Feyenoord won the league with Ajax being second place with 2 points behind first place. Four years later in the season 1964/65 the same scoreline was almost replicated by a 9–4 scoreline in Feyenoords favour. This rivalry heated up considerably in the early 1970s when these two clubs were arguably the best in the world and riots started to break between the sets of fans. During the early 1970s Ajax won 3 European Cups and 1 Intercontinental Cup, Feyenoord had won one European Cup, one Intercontinental Cup and one UEFA Cup. All these trophies won by Feyenoord at the time were the first to be won by a Dutch club. This success led to the Netherlands squad being filled with a majority of Ajax and Feyenoord players. These players would be important during the 1974 FIFA World Cup and 1978 FIFA World Cup in which they displayed what is known to be Total Football. During the season 1980/81, Feyenoord legend Wim Jansen, who played for Feyenoord for 15 years, made the leap to Ajax which created much anger for the Feyenoord fans. On his debut for Ajax, which happened to be an away game against Feyenoord, a Feyenoord fan threw an iceball in Jansen's eye, forcing him to leave the field for treatment. The rivalry intensified even further during the 1983/84 season when Ajax legend Johan Cruyff made the transfer from Ajax to Feyenoord. This was after a contract dispute between Cruyff