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In page Feyenoord:

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Ajax from Amsterdam are Feyenoord's archrivals.[1] The two clubs share a long history together and matches between the two clubs are called De Klassieker (lit.'The Classic').[2] The rivalry is not only between the two teams, but also a confrontation between the two largest cities of the country, Amsterdam and Rotterdam, two cities with extreme differences in attitude and culture.[2][citation needed] The meeting between the two teams is still considered to be the biggest match of the season.[2] In the past, there have been many clashes between the supporters of both clubs, of which the Beverwijk clash in 1997 is the most infamous, with Ajax fan Carlo Picornie being killed and several others injured.[2]