Bobby Jones won 13 of the 21 national championships he entered between 1923 and 1930, including his grand slam when he won the U.S. Amateur Open, the U.S. Open, and the British Amateur and British Open championships all in 1930. Jones retired soon after winning his grand slam at the young age of 28.
Though Jones began playing in championships in 1920, his first contest win came in 1923 when he beat both amateurs and professional at the U.S. Open Championship in Long Island, New York. In a famous act that solidified Jones as a gentleman and a sportsman, he called a penalty on himself at the 1925 U.S. Open. He approached his drive and back off, declaring that the ball had inadvertently moved. Rules officials and surveying members all stated that they hadn't seen anything, and Jones' partner Walter Hagen begged him not to assess the penalty point, but Jones couldn't deny that the ball had moved and chose to call the penalty on himself.
Bobby Jones retired to write books and articles on golf, and he also practiced law. Jones later returned to the game to play at the Augusta National Invitation Tournament until he became physically incapable of playing. In 1956, Jones was diagnosed with a rare central nervous disease that he struggled with until his death in 1971.