Career
O'Neill oversaw the NHL's expansion draft in 1967 and later looked after the NHL Entry Draft until he took over as executive vice-president after Clarence Campbell stepped down in 1977. With this new position, he doled out punishment on any disciplinary cases. He would also represent the league in the international front.
He retired from his position with the NHL in 1992. In 1994, O'Neill was elected to the Hockey Hall of Fame.