The Triple Crown in snooker is winning three tournaments, the World Championship, the UK Championship, and the Masters. These three events together make up the "Triple Crown Series". Each individual tournament is called a Triple Crown event. Players who win all three tournaments are said to have "won the Triple Crown", either over their career, or in one season alone. The Triple Crown dates back to the 1969 World Snooker Championship, when the event changed reverted to a knockout format from the prior "challenge" basis.