A tennis bracelet is called a tennis bracelet because of an incident that occurred at the US Open tournament in 1987. Professional competitor Chris Evert served a ball to her opponent with incredible force. This effort caused her diamond bracelet to fly right off her wrist. Officials had to stop the match and help her to locate her bracelet on the court before the game could continue. This memorable incident led to the coining of the term “tennis bracelet”. The lightweight and flexible nature of this jewellery also lends well to physical activities like tennis.