#6 Golf
The Grand Slam in professional golf is an unofficial term used for a golfer who wins all four major championships in a calendar year. The golfer has to win at the Masters Tournament, the US Open, the British Open (also known as Open Championship) and the PGA Championship.
Only Bobby Jones has achieved this rare feat in Golf by winning the four major events of 1930 namely the Open Championship, the US Open, the US Amateur and the British Amateur.
Tiger Woods won all the major events within a 365-day period but his triumphs were spread over two calendar years.
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Edited by Shraishth Jain