Tennis rules govern every point played on the court, from the first serve to the final stroke in a rally. Understanding these rules helps players compete fairly and spectators follow the flow of a match more clearly.
The sport is built on consistent principles enforced by the International Tennis Federation and adapted for tournaments worldwide. This overview highlights core concepts that shape how tennis is played at every level.
| Rule Category | Key Principle | On Court Impact | Example Scenario |
|---|---|---|---|
| Service | Diagonal service into the box | Initiates the point | Server aims from right side to deuce court |
| Scoring | 15, 30, 40, game | Measures progress within a game | Winning by two clear points |
| Let | Serve clips net but lands in | Retaken without penalty | Serve hits tape and lands correctly |
| Foot Fault | Stepping on or over baseline before hit | Results in a fault | Player crosses line during motion |
| Ball In/Out | Contact point relative to line | Determines whether point continues | Ball lands inside sideline on baseline |
Service Rules and Procedures
Legal Service Requirements
A legal service starts behind the baseline and moves diagonally into the opponent’s service box. The ball must clear the net without touching it except on a let. Players get two attempts per point, with specific faults defined by the rules.
Ball In and Out Judgments
Line Calls and Player Decisions
When the ball lands near a boundary, it is considered in if any part touches the line. Out calls are made when the ball fully crosses the line. In professional events, technology such as Hawk-Eye can challenge these judgments.
Scoring System Explained
Points, Games, and Sets Structure
Scoring within a game progresses as 15, 30, 40, and game point, with deuce at 40-all requiring a two-point margin to win. A set is won by the first player to reach six games with a two-game advantage, shaping the strategic pacing of a match.
Court Conduct and Etiquette
- Call lines honestly and give opponents the benefit of the doubt on close calls.
- Avoid unsportsmanlike conduct, including arguing excessively with officials.
- Wait for the score to be confirmed before serving.
- Retrieve loose balls promptly and stay alert during opponent’s points.
FAQ
Reader questions
Can the ball hit the net on serve and still be in play?
Yes, if the serve lands in the correct service box after touching the net tape, it is a let and the serve is retaken without penalty.
What happens if the ball lands exactly on the line?
The ball is considered in, and play continues, because any part of the ball touching the line counts as in bounds.
How many lets are allowed on a serve?
There is no limit to the number of lets allowed on a serve, as long as each serve meets the requirements of landing in the correct box and not being a foot fault.
Is an ace counted when the receiver does not touch the ball?
Yes, an ace occurs when a valid serve is not touched by the receiver and lands inside the service box, earning the server the point directly.