Mattie de Koning

Mattie de Koning (born 24 January 1979) is a Dutch male artistic gymnast, representing his nation at international competitions. He competed at world championships, including the 2003 World Artistic Gymnastics Championships in Anaheim, United States.

Mattie de Koning

Mattie de Koning (born 24 January 1979) is a Dutch male artistic gymnast, representing his nation at international competitions. He competed at world championships, including the 2003 World Artistic Gymnastics Championships in Anaheim, United States.