A service break occurs when a player wins the game when their opponent is serving.
The service area in tennis is where a player's serve must land into. It is often called a service box.
Milos Raonic...with a serving speed of 225km/h
A service break means that a player has won a game when his or her opponent was serving. A break point is a point when the server is behind and will lose the game if he or she loses that point.
One service box is 21ft. long by 13.5ft. wide.
The person serving is the one who starts the point with a serve (hitting the ball out of their hand). The service change is when the other player starts the point (serves). Multiple service changes happen in a single game allowing each player opportunities to serve.
A net ball in tennis is when the ball touches the net when one is serving. The person who had served the ball would have to retake the service.
Return first, unless you are a professional men's tennis player
In tennis, when the player serving is losing by a score of 15-40, this is considered "double break point" as his opponent has two opportunities to win the game or "break" his service.
It has to land in the opposite diagonal service box (because you face the opposite diagonal service box when you are serving).