In the United States the form World's Record was formerly more common. The term The World's Best was also briefly in use.  The latter term is still used in athletics events, including track and field and road running to describe good and bad performances not recognized as an official world record: either because it is not an event where the IAAF tracks the record (e. g. the 150 m run or individual events in a decathlon), or because it does not fulfil other rigorous criteria of an otherwise qualifying event (e. g. the Great North Run half-marathon, which has an excessive downhill gradient). The term is also used in video game speedrunning when someone achieves the fastest possible time for the game and category.
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