This might have been the worst collapse ever at The Masters. 5 stroke lead after 9 holes. Norman blew a 6 shot lead at the start of the fourth round to allow Faldo to win. In 1956 Ken Venturi gave up a 4 shot lead to Jack Burke. Venturi fell apart shooting 80 in the last round. I can't find any golfer who had a 5 stroke lead at the Masters after 9 holes and losing. In 2011 Rory blew a 4 shot lead at the start of the fourth round.
