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Why did Arnold Palmer never complete a career Grand Slam?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
Rory McIlroy
PGA Championship Northern Irish golfer Rory McIlroy competing in the final round of the 2012 PGA Championship.

Arnold Palmer never completed a career Grand Slam because he was unable to win the PGA Championship during his professional career.1

While Palmer was one of the most successful golfers of his era, winning multiple Masters Tournament titles and other major championships, the PGA Championship remained the only one of the four modern major tournaments to elude him. By the 1960s, he had established himself as the finest golfer of his time who had not yet won this specific tournament.12