Break=A spin which causes the ball to bounce at an angle to its line of flight.
4. LET=A service that touches the net in its flight yet falls in court, or any illegal or irregular point that does not count.
5. FAULT=An illegal service.
6. OUT=Any shot hit outside legal boundaries of the court.
7. GOOD=Any shot that strikes in a legal manner prescribed by rules of the game.
8. FOOTFAULT=An illegal service delivery due to incorrect position of the server's feet.
9. SERVER=Player delivering service.
10. RECEIVER or STRIKER=Player returning service.
W. T. T. WIMBLEDON, July 1920