The origins of the 15, 30, 40 and so on are not known, but have medieval and French roots. One possible explanation is that the scoring system is based on the presence of a clock face at the end of the tennis court. A quarter move of the appropriate hand

was made after each rest, with score being called as 15, 30, or 45 as the case might be. As the hand was moved to 60, making the complete circuit, this was the game. love= french 'l'oeuf' meaning 'egg'meaning zero. Deuce from french 'deaux' (2pt advantage