Education
He competed at the 1972 and 1976 Olympics, where his teams finished in fourth place on both occasions.
He competed at the 1972 and 1976 Olympics, where his teams finished in fourth place on both occasions.
He missed the 1980 Games which were boycotted by the Dutch Hockey Federation. Between 1971 and 1982 Leefers played 156 international matches and scored 28 goals.