Topic summary
Tennis score
Extracted from the Wikipedia article Tennis scoring system.
History
Although this suggestion might sound attractive, the first reference to tennis scoring (as mentioned above) is in the 15th century, and at that time clocks measured only the hours (1 to 12). It was not until about 1690, when the more accurate pendulumescapement was invented, that clocks regularly had minute hands. Therefore, the concept of tennis scores originating from the clock face could not have come from medieval times.