Bobby Jones was a legend, perhaps made more so because he never played as a professional. He won seven professional majors and six amateur majors, and in 1930 did what no other person had done before or since: winning the US and British Opens and US and British Amateurs.
It was called the Impregnable Quadrilateral and became known simply as the Grand Slam, after baseball's bases loaded home run.
Because Jones did not play as a professional, it is more difficult to measure him against those who did. Does he belong in a category of 13 majors because of his US Amateur titles? Well, then we would be giving Jack Nicklaus 20 right now and Tiger Woods 17.
So, because Jones did not play professionally, and gave up playing to build Augusta National and practice law, it's hard to say he's a better golfer than the others who won more. He stopped competing at age 30. If Jack Nicklaus had remained an amateur, if Tiger Woods had remained an amateur, there is no doubt that at age 28 they could have won the US Amateur and the British Amateur.
