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Method

Biomechanics and AI motion analysis.

What cannot be seen cannot be worked on. This page shows how performance is made visible and measurable — as data, not guesswork.

At BallScience4U we work at the intersections between tennis, padel, pickleball and golf. Each discipline has its own techniques, but they share biomechanical foundations.

We combine sport-science methodology with experienced coaching practice and AI-supported motion analysis.

Tennis · Padel · Pickleball · Golf
Performance factor analysis for tennis, padel, pickleball and golf
AI motion analysis Phöni supports the training process
Documented result German ranking LK2 to national top 150 in six weeks — same performance factor analysis method Phöni makes measurable today

This page documents sport and movement research — it is documentation, not a service. It is not medical, therapeutic or psychological advice: no diagnoses are made, no treatments recommended, nothing promised. For health questions, please consult qualified professionals.Diese Seite dokumentiert Sport- und Bewegungsforschung — sie ist Dokumentation, keine Dienstleistung. Sie ist keine medizinische, therapeutische oder psychologische Beratung: es werden keine Diagnosen gestellt, keine Behandlungen empfohlen, nichts versprochen. Bei gesundheitlichen Fragen wenden Sie sich bitte an qualifizierte Fachpersonen. Disclaimer

Kinetic chain
Every stroke is a chain: ground, hips, shoulder, wrist. Break one link and power leaks out before it reaches the ball.
Between the strokes
Much of performance is decided between the strokes — this work makes that visible.
Method

Performance factor analysis, biomechanics, AI.

Methodological focus

Performance factor analysis — the systematic breakdown of complex performance into nameable, measurable components. Applied in individual and group training, in association and club work and in individual career planning.

Hover for the flight

Research and experience areas

  • Mental performance factors in sport (GPTCA/ISMCA framework)
  • Performance factor analysis for tennis, padel, pickleball and golf
  • Documented training progressions (individual and group)
  • Experience in association, university and club sport
  • Long-term performance development
  • Digital diaries with AI feedback (Phöni)
  • Performance planning in the sporting context
Hover for the racket

The explorer below carries over the original biomechanics deep-dive from the BallScience4U performance lab unchanged in substance — nothing is invented, only translated for you to read here. Tap a factor card to read the full text.

Golf and racket sports

Systemic training meets high performance.

One coach, four sports, one measurable standard: performance factor analysis for tennis, padel, pickleball and golf.

See what it looks like when it works → the documented result.

Sieh, wie es aussieht, wenn es wirkt → der dokumentierte Erfolg.

Explore the performance factors

Click a card to open the full factor text. Press Escape or click again to close.

The science behind racket sports

More from the archive

Welcome to racket sports — the original intro text is preserved in the details below.

Resources on this page — the original intro text is preserved in the details below.

What biomechanics makes visible — the original text is preserved in the details below.

Conclusion: the future of racket sports — the original text is preserved in the details below.

(All original wording kept; only moved out of the main 6 substance cards for focus.)

Body and mind — connected by data

20 years

In professional sport, peak performance does not come from ever more training, but from precise control of the interplay of load, recovery and self-observation.

Twenty-five years of international coaching in tennis, padel and pickleball have shown me: the difference between good and great performance lies in making visible what happens between the strokes.

Hover for the fire
The science behind the racket
Technique alone is not enough. We analyse movement, posture and language.
AI assistant

Phöni — the AI assistant of BallScience4U

Phöni supports the training process: motion analysis, load management, competition preparation, training diary. Phöni is a tool, not a replacement for human coaching. All training decisions are made together with your coach.

Hover for the rally

Phöni: Technique solid, performance wavers

Player
I hit everything in practice — but in matches I lose focus.
Phöni
A match is not technique alone, but energy distribution. Learn to manage pauses — not just points.
Documented results

A case from the lab: documented 2013–2022.

This is what a performance factor analysis looks like when it works: a change measurable on paper, not just felt on court.

In plain terms: from club performance class 2 (LK2) to position 150 in the German national ranking (DTB) — documented individual case.

Hover for the impact

Julia Wagner

Documented performance proof (tournament player)

Timeframe 6 weeks
Ranking jump LK2 → DTB 150 (club level 2 → national top 150)
Method Performance factor analysis — the same method Phöni scales today
6Weeks
150DTB Ranking
4Sports
2League Jumps

This is a documented individual case, not a guarantee: a ranking jump built on performance factor analysis and coaching — the same method Phöni makes measurable and repeatable today.

Timeline: Julia Wagner was coached in phases from 2013 to 2015 and again in 2021–2022. The six-week LK2 → DTB 150 jump is one specific episode within that longer coaching relationship, not the entire timeframe.

Julia konnte sich in den Jahren 2013 bis 2015 und in den Jahren 2021 und 2022 jeweils sehr auffällig verbessern. Sie stieg nicht nur z.B. von der Bayernliga in die zweite Bundesliga auf, sondern ihr größter Aufstieg im Sinne der Leistungsentwicklung ist dokumentiert von LK2 auf DTB 150 in rund 6 Wochen gestiegen. Ebenso wie bei einem Großteil der anderen auffälligen Spielerentwicklungen war auch hier der Knackpunkt noch vor taktischen Elementen das korrekte Verständnis der Kraftverhältnisse im Treffpunkt. Sie wurde im Jahr 2013 bis zum Jahr 2015 teils durchgängig begleitet und Teile ihrer Entwicklung wurden auch bei Vorträgen beim Verband deutscher Tennislehrer dokumentiert. Im süddeutschen Raum hat ihre Spielerentwicklung durch die extrem schnelle anhand des Rankings messbare Steigerung sehr große Aufmerksamkeit erzielt.
Original quote in German.

Voices on the method

Real names attached — not anonymous testimonials.

We were all delighted by his straightforward, clear way of communicating. On top of that, his immense theoretical knowledge as a sports scientist impressed us — all the more because he translated that theoretical knowledge perfectly into practical exercises for us.
Dr. Gerrit Peitsch
Hover for the court
Mein Sohn Ben hatte 2022 die Möglichkeit, bei Andy zu trainieren, und wir sind wirklich zufrieden mit den Fortschritten, die er gemacht hat. Besonders die Arbeit an den Treffpunktgrundlagen und den Kraftverhältnissen zum Tennisball hin im Treffpunkt hat ihm sehr geholfen. Diese Techniken und das grundlegende biomechanische Verständnis haben Bens Spiel spürbar verbessert. Das Training in Andalusien und später in Hochkönig war eine wertvolle Erfahrung, ebenso wie die weiteren Trainingstermine im Nachhinein. Mittlerweile spielt er erfolgreich bei Jugendturnieren und im Verbandsspiel in Baden-Württemberg. Andy hat mit viel Geduld und Engagement gearbeitet, was Ben wirklich motiviert hat, sich weiterzuentwickeln.
Original quote in German.
Caroline & Benassociation players, Baden-Württemberg (published with parental consent)
Hover for the strings

See your own numbers move

Write me about your sport and what interests you — I will personally get back to you within about 3 working days.

BallScience4U is the performance lab of the AUGMANITAI research programme — where research on human-AI interaction meets the court.

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Private research and testing site of the AUGMANITAI research programme. Nothing is sold online; enquiries are handled individually. No legal, financial or health advice. AI-assisted media are labeled as such.Private Forschungs- und Test-Seite des AUGMANITAI-Forschungsprogramms. Online wird nichts verkauft; Anfragen werden individuell behandelt. Keine Rechts-, Finanz- oder Gesundheitsberatung. KI-unterstützte Medien sind entsprechend gekennzeichnet. Imprint · Privacy · Disclaimer