<Tr> <Td> 4--7, 10--8, etc . </Td> <Td> "set" </Td> </Tr> <P> The current point score is announced orally before each point by the judge, or by the server if there is no judge . When stating the score, the server's score is stated first . If the server (or the judge) announces the score as "30--love", for example, it means that the server has won two points and the receiver none . </P> <P> The origins of the 15, 30, and 40 scores are believed to be medieval French . The earliest reference is in a ballad by Charles D'Orleans in 1435 which refers to quarante cinque (which gave rise to modern 40) and in 1522 there is a sentence in Latin "we are winning 30, we are winning 45". The first recorded theories about the origin of 15 were published in 1555 and 1579 . However the origins of this convention remain obscure . </P> <P> It is possible that clock faces were used on court, with a quarter move of the hand to indicate a score of 15, 30, and 45 . When the hand moved to 60, the game was over . However, in order to ensure that the game could not be won by a one - point difference in players' scores, the idea of "deuce" was introduced . To make the score stay within the "60" ticks on the clock face, the 45 was changed to 40 . Therefore, if both players have 40, the first player to score receives ten and that moves the clock to 50 . If the player scores a second time before the opponent is able to score, they are awarded another ten and the clock moves to 60 . The 60 signifies the end of the game . However, if a player fails to score twice in a row, then the clock would move back to 40 to establish another "deuce". </P>

Where did the scoring of tennis come from