Top-league rugby, youth from age 3.
Cas RC, founded in 1967, with two top-division teams (men and women) and a large youth section from age three. National champions in 2005 and 2007. Based on the Van Haerlemlaan.
Cas RC's men and women start a new top-league season. The first home match is Saturday 19 September against RC 't Gooi, followed by Oktoberfest.