You play tennis and want to teach it to your child?
The 4-step system used by children's coaches – finally also for tennis parents
For parents who love tennis – and finally want to know how to pass it on.
✅ What top children's coaches really do differently
✅ The 90/10 rule: The biggest parenting mistake
✅ From "I don't want to!" to "Again!" in 10 minutes
✅ Ball, racket, court – everything explained simply
✅ 2-minute test: Start at the right level
100% satisfaction guarantee – or your money back!
Try the guide risk-free for 14 days.
✓ What experienced children's coaches do differently
✓ The #1 mistake parents make and why children lose the fun
✓ The 90/10 rule: What most parents are doing exactly wrong
✓ From 'I don't want to anymore!' to 'Again, Dad!' – in just 10 minutes
✓ Which ball, which racket, which court? Everything at a glance.
✓ The 2-minute test: How to start at exactly the right level
WHACK! Tennis Guide for Parents - Learn Tennis Step by Step

YOU KNOW THAT...
You've been playing tennis for years.
You love this sport.
And now you want to pass this love on to your child.
So you go out onto the court with him. You show him the grip. You explain the footwork. You throw him a ball.
And after 5 minutes?
"I don't want anymore."
You don't understand.
You did everything right, didn't you?
You try again.
Maybe another day.
Another explanation.
More patience.
Same result.
At some point you'll ask yourself:
Is it my fault?
Is it because of my child?
Is tennis not for us?
It's not your fault.
And not on your child.
It's the system's fault.
THE WHACK! SYSTEM
What if there was a path that grows with your child?
A system that successful children's coaches have been using for years.
– but no parenting guide has explained that yet.
4 steps. 4 colors. 1 clear path.
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Ages 3-6 years
BLUE STAGE
The Blue Stage is the first step in the WHACK! system and is aimed at children.
For children aged 3 to 6 years. By rolling the ball, children at this stage learn to discover tennis in a playful and simple way.
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Ages 5-8 years
RED STAGE
The Red Stage is aimed at children aged 5 to 8 years. This is the stage where the actual game of tennis begins. The child can already play over the net, experiences their first rallies, and plays their first matches with simplified rules.
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Ages 7-10 years
ORANGE STAGE
The Orange Stage for kids aged 7 to 10 combines technique, movement, and game understanding. Children learn to hold the ball, move confidently across the court, and make increasingly conscious tactical decisions.
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Ages 9-12 years
GREEN STAGE
The Green Stage is the final step in the WHACK! system before children play with a regular ball. The game becomes more complex, the field larger, and the demands on technique, tactics, and mental strength increase.
109 PAGES.
EVERYTHING YOU NEED.
Here's what you'll get:
📘 Quick Start with 4 tests - In 2 minutes you'll know where your child should start.
📘 4 Stages, 4 Colors – From Blue to Green, matching age and ability
📘 Equipment Guide – Which racket, which ball, which court
📘 40+ exercises for older adults – "How to do it", "Tip" and "Variations"
📘 Checklists for each stage – See at a glance what your child can already do
📘 Common Mistakes & Solutions – So you know what to correct
WHACK! Tennis Guide for Parents - Learn Tennis Step by Step

Our testimonials
This is what the parents say
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PATRICK
"I've been playing tennis myself for ages, but every time I went to the court with Leonie, she lost interest after a few minutes. I thought tennis just wasn't for her."
Then I understood: I started too hard. With WHACK!'s 4-step system, we started in the Red Stage – and suddenly she wanted to continue, not me.
Now we play together regularly on weekends."
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LISA
"I never knew where to start. Which ball? Which racket? What do we practice first?"
WHACK! explained everything perfectly. The Quick Start Test showed that Valentin should start rolling in the Blue Stage at age 5. The exercises are explained so clearly that I can't go wrong.
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STEFAN
Three months ago: Tears on the court, racket thrown down, 'I can't do this!'
Today: Simon asks every day when we're playing again.
The difference? We stopped explaining and started playing. The 90/10 rule from the book changed everything.
About me
25 years as a state-certified tennis instructor.
Accompanied hundreds of children.
One insight:
It's not about talent.
It's about starting off right.
No child gets straight onto a bicycle.
First comes the balance bike.
In tennis? First comes the rolling.
The right start determines motivation. Small successes build momentum – and momentum builds champions.
I wrote WHACK! so you can support your child in getting started with tennis – without a coaching license, without frustration.
Just with a little time and desire.
Let's WHACK!
Coach Chris
Christoph Wagner, BSc. | Founder, WHACK! Tennis
FAQ
Which tennis racket is right for my child?
Which tennis racket is right for my child?
The racket length depends on age and height:
- 3-5 years: 21" (53 cm)
- 5-7 years: 23" (58 cm)
- 7-9 years: 25" (63 cm)
- 9-12 years: 27" (66-68 cm)
The Equipment Guide in WHACK! shows you exactly which racket is suitable for which stage.
My child is only 3 years old. Isn't that too early for tennis?
My child is only 3 years old. Isn't that too early for tennis?
No, perfect! The Blue Stage is designed specifically for 3-6 year olds. It's not about tennis technique, but about rolling, catching, and ball control – playfully and without pressure. The earlier, the better.
My child is already 10 or 11 years old. Is it still worth it?
My child is already 10 or 11 years old. Is it still worth it?
Absolutely. The guide covers all age groups from 3-12 years. With the Quick Start Test, you'll find the right stage in 2 minutes – whether you're a beginner or advanced.
At what age can children learn tennis?
At what age can children learn tennis?
Children can start playing tennis from the age of 3 – but not with traditional training. The Blue Stage focuses on ball feel, coordination, and movement: rolling, catching, and basic racket swinging. Proper mini-tennis with the Play+Stay system begins around 5-6 years old. WHACK! covers all age groups from 3-12 years.
Do I need a tennis court to practice with my child?
Do I need a tennis court to practice with my child?
No! The Blue Stage (ages 3-6) works perfectly well without any special space – in the living room, garden, or park. Only from the Red Stage onwards – from around age 6 – do you need a small court (approx. 5x6m). Many clubs offer mini-courts for children. The guide also shows you alternatives for playing at home.
How often should a child practice tennis?
How often should a child practice tennis?
For beginners, 1-2 short sessions per week (10-20 minutes) are sufficient. Children learn better in short, regular sessions than in long training sessions. More important than the duration: fun and a sense of accomplishment. With WHACK! you practice at your own pace.
My child loses interest quickly. What am I doing wrong?
My child loses interest quickly. What am I doing wrong?
Most of the time, the problem is that children find it too difficult to get started. The courts are too big, the balls are too fast, and there are too many explanations. The solution: Start one level lower than you think. Small successes motivate – frustration is a hindrance. WHACK! shows you how to find the right entry point.
What is the Play+Stay system / mini-tennis?
What is the Play+Stay system / mini-tennis?
Play+Stay is the official children's tennis concept of the ITF and DTB. Children play on adapted courts with softer balls:
- Red (small field): 5-8 years
- Orange (Midcourt): 7-10 years
- Green (large field): 9-12 years
WHACK! is based on this system and expands it to include the Blue Stage for 3-6 year olds.
Can I teach my child tennis without being a coach myself?
Can I teach my child tennis without being a coach myself?
If you have tennis experience yourself - up to a certain level, yes.
How do I find out which grade my child should start in?
How do I find out which grade my child should start in?
Find out in 2 minutes with the Quick Start Test in WHACK! Four simple tests will show you whether your child should start in the Blue, Red, Orange, or Green Stage. The golden rule: It's better to start too easy and progress quickly than to start too difficult and give up in frustration.
Can I teach my child tennis without being a coach myself?
Can I teach my child tennis without being a coach myself?
If you play tennis yourself – yes, up to a certain level! You don't need a coaching license, but you do need the right system. Because playing tennis and teaching tennis are two different things. WHACK! fills exactly this gap: 40+ exercises, clearly explained, and immediately applicable.
What is the WHACK! Guide about?
Teaching children tennis: The step-by-step guide for parents (3-12 years)
Do you play tennis yourself and want to teach your child? The WHACK! Guide shows you how children learn tennis – step by step, without frustration, with the proven Play+Stay system .
Why your child loses interest after 5 minutes
Many tennis parents know this feeling: You're looking forward to spending time together on the court – but your child wants to stop after 5 minutes. The problem isn't your child. The problem is the wrong approach. Courts that are too big, balls that are too fast, too many explanations. With the right system, everything changes.
The 4-step system: How children learn tennis correctly
WHACK! is based on the internationally proven Play+Stay concept – adapted for parents without coaching experience:
- Blue Stage (3-6 years): Develop ball control through rolling and catching
- Red Stage (5-8 years): First rallies on a small field using training balls
- Orange Stage (7-10 years): Consolidating technique in the midcourt
- Green Stage (9-12 years): Transition to full-court tennis
At what age can children start playing tennis? As young as 3 years old – if you know how.
Practicing tennis with a child – even without coaching experience
You don't need a coaching license to teach your child tennis. What you do need is the right system. Because good players aren't automatically good teachers. WHACK! fills this gap perfectly – with 40+ exercises you can implement immediately.
Which tennis racket and tennis ball are suitable for which age group?
Having the right equipment is crucial. The Equipment Guide shows you:
- Which tennis racket size for which age (17-26 inches)
- Which methodology balls for which stage (red, orange, green)
- Which field size for which development stage
No guesswork, no bad purchases.
40+ Kids' Tennis Exercises – Immediately Usable
Each exercise in the guide follows a clear structure: How to do it, tips, variations . Perfect for tennis-loving parents who want to learn together with their child – at their own pace, without expensive tennis lessons.
Frequently Asked Questions: Tennis for Children (Beginners)
At what age can children learn tennis?
From age 3 with the Blue Stage. Proper mini-tennis from age 5-6.
Do I need a tennis court?
No. The Blue Stage works in the garden or park.
How much does tennis cost for children?
With WHACK! you save hundreds of euros on course fees. One-time fee of €19.90 .