Red, orange, green, yellow: which tennis ball stage is your child in?

If your child is 8 or under, they are probably on red balls. If they are 8 to 10, orange. If they are a strong 9- or 10-year-old, green. After green comes the regular yellow ball. These ages are a guide from the ITF, tennis's world governing body, and your child's level matters as much as their age.

Some strong players under 10 already practice and play with the yellow ball, and some older beginners do better starting on a smaller court. Young players on small courts are a big part of my coaching week, so here's how the stages work and what I look for.

The stages at a glance

All the numbers below come from the ITF Rules of Tennis and from Tennis Play and Stay, the ITF's program for young players. One thing that surprises parents: the ITF numbers the stages backward. Stage 3 (red) comes first.

Each stage's ball is slower than the one after it. The ITF's Tennis Play and Stay program estimates the red ball is about 75% slower than a yellow ball, orange about 50% slower and green about 25% slower. They also bounce lower:

A slower, lower ball reaches your child at a comfortable height and gives them time to get behind it. On a small court, kids can rally and play points from the first lessons. The ITF's own motto for this is "serve, rally and score".

The foam ball

The foam ball is the softest version of the red ball, and the ITF Rules list it with the red stage. It's bigger and gentler, and many of the youngest kids start with it, often in a very small space.

In my groups, kids who play once or twice a week usually spend about 6 to 8 months with foam and other extra-soft starter balls before they move to the red ball.

What each stage should learn

These are the things I want a player to do well before they move up. They're about playing the game, not about perfect strokes. Technique is your child's coach's job, and it keeps developing at every stage.

Red ball

• Rally with a partner from the back of the small court.
• Serve to start a point, and keep their own score.
• Get behind the ball before hitting it, instead of reaching for it.
• Play real points and little matches, not only drills.

In my red-ball groups, the clearest sign a child is ready for orange is a rally of 5 to 10 shots in a row, and the shots look good, not lucky.

Orange ball

• Longer rallies from behind the baseline (the back line) of the orange court.
• Serve into the service box to start most points.
• Move the other player side to side: hit to space, not to the person.
• Get back to the middle after each shot.

Green ball

• Rally on the full court and keep the ball deep, past the service line (the line across the middle of each side).
• Rally cross-court (on the diagonal) and wait for the right ball before changing direction.
• Play whole matches and keep the score calmly, including tiebreaks.

Yellow ball

From here, your child plays with the same ball and the same court as adults.

Signs your child is ready to move up

Watch a few of their matches, not just one practice. I look for these:

1. The court looks too small. They hit long a lot, not because they're wild, but because the court can't hold their shots any more.
2. Rallies are easy. They keep rallies going without much effort and want more of a challenge. On red, I look for 5 to 10 good shots in a row.
3. They can serve and keep score on their own. Points start and finish without an adult sorting it out.
4. They win most matches at their stage comfortably. Not every match, but most. Tennis Canada suggests choosing events where, over time, a player wins about three matches for every one they lose.
5. They're excited, not worried, about moving to the next ball color. Moving up too early can turn a confident kid into a frustrated one.

Tennis Canada's goal is for players to train and play on the full court with the green ball by about age 9. It also says readiness depends on more than age: how athletic a child is, how fast they are growing, how many hours they train and play matches, their commitment, how quickly they learn and their results.

When in doubt, ask the coach. A coach who has watched your child for a few months can tell you more than any chart. Moving back down for a while is fine too. That's the right ball for now.

Why your child shouldn't rush to yellow

It's tempting to move up fast because yellow looks like "real tennis". On a full court with a fast ball, I see young players reach, hit balls above their shoulders, and chase balls they can't get. They spend the rally just getting the ball back. On the right court, they learn to choose where to hit and when to attack, and that part carries all the way up.

Questions parents ask

Can my child skip a stage?

Some do. Kids move up by age and level, and some strong players under 10 already practice and play with the yellow ball. Skipping makes sense when a player is clearly ready by level, not just by age. Ask the coach first.

What age does the yellow ball start?

There's no single age. The ITF guide puts green at strong 9- and 10-year-olds. In many junior systems, most players in the 12-and-under age group use the yellow ball on the full court. Check with your national or regional association.

Is the foam ball a separate stage?

No. The ITF lists it as a version of the red ball. Many kids use it first because it's the softest.

Which racket size should we buy?

The ITF's 10-and-under guide says up to 23 inches for red, 23–25 inches for orange and 25–26 inches for green. Tennis Canada suggests 19–21 inches for red. Your child's coach can check the fit in person.

Do tournaments for young kids use these balls?

Under the ITF Rules, 10-and-under competition may use only the red, orange and green ball types. Each country's association runs its own events and decides the details, so check the entry rules of the event you choose.