Bobby Jones won the 1930 Grand Slam of the U.S. Open, The Open, U.S. Amateur, and British Amateur.
Jones completed the unprecedented feat as an amateur, winning four major championships in one calendar year. His sequence began with the British Amateur at the Old Course at St Andrews, continued with The Open at Royal Liverpool, and then moved to the United States for the U.S. Open at Interlachen and the U.S. Amateur at Merion.
The phrase “Grand Slam” had a different meaning in Jones’s era. The Masters and PGA Championship were not part of his achievement: the Masters had not yet been founded, and Jones was an amateur who could not compete in the professional PGA Championship. His 1930 sweep therefore covered the leading U.S. and British open and amateur events.
Jones retired from competitive golf soon afterward at age 28. He later helped create Augusta National Golf Club and co-founded the Masters Tournament, giving him an enduring connection to the championship that reshaped the modern definition of golf’s Grand Slam.