He was knocked unconscious , and went into convulsions .
During a 1977 game Dave Farrish of the New York Rangers hooked Martin around the neck from behind and kicked Martin 's feet out from under him , causing Martin to hit his head on the ice .
Martin was knocked unconscious , and went into convulsions .
During a 1977 game Dave Farrish of the New York Rangers hooked Martin around the neck from behind and kicked Martin 's feet out from under him , causing Martin to hit his head on the ice .