Frisian handball ( ; ) is a traditional Frisian sport , related to American handball and fives , that is most commonly practiced by people from the northern Dutch province of Friesland ( `` Fryslân '' ) .
Frisian handball ( `` Dutch : kaatsen , Frisian : Keatsen '' ) is a traditional Frisian sport , related to American handball and fives , that is most commonly practiced by people from the northern province of Fryslân , or Friesland .