Richard did knock Dill down behind the net and sucker punched him in the penalty box and with the newspapers unable to resist the pun in the resulting news stories as in "Dill pickled. The true story is that the Rangers never sent Dill after Richard, and nobody was knocked out cold.
While with the New York Rangers, Dill's battles with Montreal Canadiens great Maurice "Rocket" Richard were a bit overblown by the Montreal press. Dill had fought Richard's teammates Mike McMahon and Butch Bouchard long before ever mixing it up with the Rocket.