Wikipedia
The staafincident ( Dutch, "rod incident") was a very serious case of Football hooliganism which took place 27 September 1989 in the De Meer Stadion of Dutch football club Ajax Amsterdam. During a home match against Austria Wien the Austrian goalkeeper Franz Wohlfahrt was struck by a metal rod which was launched onto the pitch by the Ajax hooligan firm F-side. Ajax conceded the match regulatory and as a result were excluded from competing in European football for a year.
Earlier that year, Ajax chairman Ton Harmsen was succeeded by Michael van Praag, the son of Harmsen's predecessor Jaap van Praag. Under the initiative of the new chairman, popular Dutch celebrities would accompany the team on match days, in order to promote fair play as public speakers. After Frank Masmeijer and Harry Slinger had previously accompanied the team on a match, it was Dutch comedian Freek de Jonge's turn during the UEFA Cup match between Ajax and Austria Wien. Ajax had already lost the away match against Austria Wien 1–0 and therefore would need at least 1–0 victory at home. At the time of the match Austria were in the news regarding the war history of the countries president at the time Kurt Waldheim, during World War II, where he was involved in deportations and actions against partisans, which he had concealed in his autobiography.