See this tennis bracelet here. There is some debate over whether the name tennis bracelet predates this game. According to some critics, the bracelet got its name simply because wearing diamonds while playing tennis was so unheard of, so that when Chris Evert began to wear her diamond bracelet the name tennis bracelet was given to the accessory. And considering how famous and well-known she was in the game of tennis, the name stuck.
The reason: The clasp on her diamond bracelet had broken and the bracelet had fallen off her wrist, and she wanted to find it before playing the next point. When asked about it in an interview, she called the missing piece of jewelry her “tennis bracelet,” and so the iconic name was born.
Diamond tennis bracelets on wrist became the norm to wear at anytime, day or night, not just special occasions. Historians still debate whether the exact year was 1978 or 1987 when the Chris Evert incident occurred, but one thing is certain, the sport of tennis is responsible for why is it called a tennis bracelet.
It should be noted that there is some dispute over this event being the official catalyst to the name change. Some critics argue that it was named the tennis bracelet out of the sheer novelty of wearing diamonds while playing tennis. Regardless of the exact moment the tennis bracelet became the tennis bracelet, the name hasn’t changed since then.
Tennis bracelets are 20th century inventions that use small diamonds to create a single bracelet. They weren't called "tennis" bracelets until after a tennis star's jewelry malfunction. The attractive bracelets, sometimes also known as eternity or inline bracelets, can cost hundreds to tens of thousands of dollars, depending on the style, size and stone.
One thing is certain: while the exact time and date at which the name tennis bracelet was popularized can't be claimed for sure, it will almost always be tied to Chris Evert.