Gary Numan | Henk Lauwers | Numan Gumaa | Henk Rogers | Henk Westbroek | Henk Volberda | Henk Vogels | Henk ten Cate | Henk Meijer | Henk Badings | Numan | Henk van Kessel | Henk van der Grift | Henk Tijms | Henk Sneevliet | Arthur Numan |
Together with his twin brother Peter Snijders, Anton Geesink, Hein Essink, Tonni Wagenaar, Coos Bontje, Jan van Ierland, Martin Poglajen, Joop Gouweleeuw, Wim Ruska, Ernst Eugster, Henk Numan, Peter Adelaar, Willy Wilhelm, Ben Spijkers, Anthony Wurth and Theo Meyer he belongs to the generation of Dutch top judoka which gained their successes in the 1960s and 1970s.