Royers began practicing
karate at the age of 16. He went on to become the Dutch national champion on nine occasions and also won medals at the
Karate World Championships in 1979, 1980, 1982 and 1984 as well as the
World Games 1981. He also competed in
amateur boxing. In 1978, Royers joined the
Mejiro Gym and took up
kickboxing. He became the European
Savate Champion in 1984 when he defeated
Robert Paturel via
technical knockout in
Paris,
France. The following year, he won the
WKA Middleweight Championship of the World when he won a 12-round decision victory over Yasuo Tabata. He was forced to retire in 1986, however, after breaking his arm twice in training. Following his retirement, Royers opened his own gym in his home town of
Arnhem and began working as the
Dutch language kickboxing commentator for
Eurosport in 1990. ==Titles==