What Dutch professional football club based in Amsterdam can claim Sven Westendorp as a supporter?
Sven Westendorp: Sven Westendorp, "HIGH" (December 22, 1969 — August 17, 2011) was a criminal, graffiti artist, and designer from Amsterdam, Netherlands. Sven Westendorp:  He was a well known supporter of the association football club AFC Ajax, and a member of the hooligan firm F-side. AFC Ajax: Amsterdamsche Football Club Ajax (] ), also AFC Ajax, Ajax Amsterdam or simply Ajax, is a Dutch professional football club based in Amsterdam.
AFC Ajax