How Serving Works
Where the serve must land: You must serve diagonally into the opponent's service box.
Servering position: Stand behind the baseline. Feet must not touch the baseline before contact (foot fault).
Number of serves: Two attempts per point.
When serving switches: After each game, the other player becomes the server. In doubles, the other team becomes the server after each game, teammates take turns serving per game rotation.
Singles vs Doubles Rules
Single's: Outer Sideline's/Double's Sideline is out.
Double's: The Outer Sidelines are in.
Parts of the Tennis Court
Baselines: The back lines at the far ends of the court. Players serve from behind these lines.
Singles Sidelines: The inner vertical lines running down the sides. Used only for singles matches.
Doubles Sidelines: The outermost vertical lines. Used only for doubles matches.
Service Line: The line between the forecourt and the backcourt.
Center Service Line: The line that runs from the net to the service line. Divides the service boxes into left and right.
Left & Right Service Boxes: The four small rectangular boxes nearest to the net. Serves must land here on the diagonal.
The Scoring System
Point Number: 0, Call: “Love”. Point Number: 1, Call: “15”. Point Number: 2, Call: “30”. Point Number: 3, Call: “40". Point Number: 4, Call: “Game” unless 40 all.
Deuce & Advantage: If both players reach 40 all then call is "Deuce". On Deuce: Win one point → Advantage, Lose next point → back to Deuce, Win two in a row from Deuce → Game.
Games → Sets → Match: A set is first to 6 games, winning by 2. A match is Best-of-3 sets.
What Is a Let?
Serve hits the net but lands in the correct service box. No penalty. Server repeats the serve.
When Do Players Switch Sides?
Players change ends of the court: After every odd-numbered game.