| Official Development Stage | Stage 1 green ball | Green ball tennis is the final ball stage in the progressive pathway commonly used before players move to a standard yellow tennis ball. |
| Ball Speed | Approximately 25% slower than a standard yellow ball | The reduced speed gives developing players more time to prepare, move into position, and choose an appropriate shot. |
| Ball Construction | Pressure-reduced tennis ball | The ball has lower internal pressure than a standard ball, producing a lower and more manageable bounce while preserving a familiar tennis-ball feel. |
| Recommended Player Level | Developing junior players and beginners transitioning toward full-court tennis | The ball is suitable for players who have progressed beyond red and orange ball activities but are still building consistency, movement, and tactical awareness. |
| Singles Court Length | 78 ft (23.77 m) | Green ball tennis is generally played on a full-size tennis court, so players learn the distances and movement patterns used in regular tennis. |
| Singles Court Width | 27 ft (8.23 m) | The singles court provides the standard playing area for one player on each side of the net. |
| Doubles Court Width | 36 ft (10.97 m) | For doubles, the additional side alleys are included, creating the standard full-width tennis court. |
| Net Height | 3 ft (0.914 m) at the center; 3 ft 6 in (1.07 m) at the posts | The standard tennis net height is used, helping players develop realistic serving, rallying, and net-play skills. |
| Racket Size | Typically about 25–27 in (63.5–68.6 cm), selected according to the player’s height and strength | A lighter, correctly sized racket improves control and makes it easier for younger players to create a smooth swing. |
| Scoring System | Usually standard tennis scoring: love, 15, 30, 40, and game | Players can learn the same scoring language used in regular tennis while adapting match length to their age and ability. |
| Match Format | Flexible; short sets, timed matches, or first-to-a-target score are common | Coaches and organizers can shorten matches to increase participation, reduce waiting time, and keep rallies active. |
| Serve Rules | Players normally serve diagonally into the opposite service box | Both underarm and overarm serves may be used in beginner sessions, depending on the player’s stage and the activity format. |
| Two-Serve Format | Two attempts are generally allowed in standard scoring formats | This familiar rule helps players develop a reliable first serve and understand the consequences of a fault. |
| Ball-in-Play Rule | A ball is in unless it lands outside the court lines | Players practice calling lines, tracking the ball, and making decisions under realistic full-court conditions. |
| Learning Benefit | More time, lower bounce, and improved rally control | The slower ball helps players sustain longer rallies and focus on direction, height, depth, recovery, and court positioning. |
| Why It Is Popular | It combines realistic tennis with a more accessible pace | Players can use a full-size court and standard-style rules without facing the speed and bounce of a regular yellow ball too early. |
| Transition to Yellow Ball | Introduced when the player can rally, serve, move, and score consistently | The transition should be based on skill and confidence rather than age alone, because players develop at different rates. |