Context
The Background: High Ambition Meets a Major Setback
The Player: A high-potential 14-year-old female player from the UK.
The Context: She trains at the prestigious Repton School, one of the top athletic schools in England with a massive reputation.
The Setback: She was one of the best British players in the U12 category. However, she developed Osgood-Schlatter disease (a severe growth pathology affecting the knee). Because it was detected too late, poorly monitored, and poorly managed with improper training methods, she was forced to stop playing entirely for 1.5 to 2 years.
The Goal: Her father contacted me to find high-level, elite coaching. Despite the long injury break, her ambition remains clear: reaching the professional circuit.
We evaluated her for the first time in April 2025 throught an intensive Tennis Easter Camp in France. We rebuild her game and test her in real match situations.
The Context: She trains at the prestigious Repton School, one of the top athletic schools in England with a massive reputation.
The Setback: She was one of the best British players in the U12 category. However, she developed Osgood-Schlatter disease (a severe growth pathology affecting the knee). Because it was detected too late, poorly monitored, and poorly managed with improper training methods, she was forced to stop playing entirely for 1.5 to 2 years.
The Goal: Her father contacted me to find high-level, elite coaching. Despite the long injury break, her ambition remains clear: reaching the professional circuit.
We evaluated her for the first time in April 2025 throught an intensive Tennis Easter Camp in France. We rebuild her game and test her in real match situations.
2025 Easter Camp - Testing phase Pinpoint Vs Plateform Stance
My observations and reflections as a coach
The player, her family and I all agree on one thing: the ball isn’t going very fast, and her serve lacks consistency and efficiency.
As a coach, I’ve noticed an inefficient use of the ‘PinPoint’ stance technique. Her counter-movement jump is completely ineffective. There’s insufficient acceleration of the racket head.
I always ask a player: why are you using this service technique? And, as always, the player replies, ‘Because my coach told me to.’ This means we’re working with excellent learners, as a player applies what a coach tells them to do.
Before starting trial and error to change their technique, I use a personal approach: I assess the two service techniques against five criteria:
1. Comparison of maximum speeds on the deuce and advantage sides over 10 serves on each side
2. Comparison of average speeds
3. Percentage of balls in
4. Analysis of errors on the deuce and advantage sides
The player, her family and I all agree on one thing: the ball isn’t going very fast, and her serve lacks consistency and efficiency.
As a coach, I’ve noticed an inefficient use of the ‘PinPoint’ stance technique. Her counter-movement jump is completely ineffective. There’s insufficient acceleration of the racket head.
I always ask a player: why are you using this service technique? And, as always, the player replies, ‘Because my coach told me to.’ This means we’re working with excellent learners, as a player applies what a coach tells them to do.
Before starting trial and error to change their technique, I use a personal approach: I assess the two service techniques against five criteria:
1. Comparison of maximum speeds on the deuce and advantage sides over 10 serves on each side
2. Comparison of average speeds
3. Percentage of balls in
4. Analysis of errors on the deuce and advantage sides
Geoffroy
What was expected: greater service effectiveness with the ‘PinPoint Stance’ technique compared to the ‘Platform Stance’.
Results obtained
Switching to the ‘Platform Stance’ technique – assessment 2 months later
The results indicated an advantage over the Platform stance. Based on this objective data, I decided to switch the player to the ‘Platform Stance’ technique.
.
The player left France with a highly precise, tailored physical and technical homework protocol to execute back in England.
Two months later, we came back together for a three-week summer training course. The evaluation of the service using the "Platform stance" technique gave the following results.
.
The player left France with a highly precise, tailored physical and technical homework protocol to execute back in England.
Two months later, we came back together for a three-week summer training course. The evaluation of the service using the "Platform stance" technique gave the following results.
Geoffroy
Results achieved
+25 MPH
maximum serve speed
+13MPH
Maximum serve speed with fatigue :
Between 50 et 60%
Consitency
Conclusion
I would like to thank the English coaches at Repton School for accepting this change and for implementing the programme so effectively. This also means that the quality of the programme is essential when developing a player. A personalised approach is the best way to achieve this.
When we say JuniorToPro is precise, methodical, and pragmatic, this case study is the perfect proof. We don't change a technique because "it looks good on TV". We test, we collect data, and we select the exact biomechanical profile that fits the player's history.
By combining traditional training methods with objective tracking, we saved money for parents, years of wasted effort and successfully put a top junior back on the track to elite performance.
When we say JuniorToPro is precise, methodical, and pragmatic, this case study is the perfect proof. We don't change a technique because "it looks good on TV". We test, we collect data, and we select the exact biomechanical profile that fits the player's history.
By combining traditional training methods with objective tracking, we saved money for parents, years of wasted effort and successfully put a top junior back on the track to elite performance.