World record

A world record is the officially recognized best performance in a sport or event under its governing rules. Recognition depends on the relevant authority accepting the result and conditions.

World Athletics: The international governing body for track and field, road running, race walking, and related events. It sets rules and ratifies world records in athletics.
Olympic record: The best performance recorded at an Olympic Games in a particular event. It is limited to the Olympic setting and may be weaker than the world record.
Usain Bolt: Jamaican sprinter who set the men's 100-metre and 200-metre world records in 2009. His Berlin performances remain defining examples of sprint world records.
Record-breaking: The achievement of a performance that surpasses an existing recognized record. Breaking a world record can redefine expectations for an event.
World record progression: The chronological sequence of recognized world-record performances in a sport or event. It shows how ratified performances replace earlier records.
National record: The best officially recognized performance by athletes representing a particular country. Its scope is one country rather than the entire world.
Florence Griffith-Joyner: American sprinter who set the women's 100-metre and 200-metre world records in 1988. Her long-standing sprint records illustrate the durability and scrutiny records can attract.
Athletics world record progression: The history of changing world records across track and field events. Progression charts reveal long-term shifts in training, technique, and performance.
Doping in sport: The use of prohibited substances or methods to improve athletic performance. Anti-doping rules can invalidate performances or later strip records.
Personal best: An athlete's best performance in a particular event over their career. It belongs to one athlete and need not approach the world best.

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