Building the Right Foundation: What the Research Says About Teaching Young Tennis Players

Every season, I hear some version of the same complaint: "The pro at our club says you teach it wrong." Or: "My friend who plays tennis thinks my kid should already be hitting open stance." It's a fair question. And the answer has everything to do with how young bodies actually learn movement, what the biomechanics research tells us about loading and injury risk, and the difference between what a physically mature elite athlete can do and what a 7-year-old beginner should be doing. This article lays out the science — and my methodology — so you can evaluate any tennis program with informed eyes.

The Foundation That Everything Else Is Built On

In biomechanics, the tennis forehand and backhand are described as a kinetic chain — a sequence of forces that travels from the ground up through the legs, hips, torso, shoulder, arm, and into the racket. Published research confirms that axial rotation of the pelvis and trunk are the primary contributors to racket speed in the groundstroke. But here is what gets overlooked in that conversation: before a player can generate power through rotation, they must first understand how to drive linear momentum through the ball. (Reid & Elliott, Journal of Sports Sciences)

This is where beginners — especially children under 10 — need to start. Not with open stance. Not with a full loop take-back. With the fundamental: driving through the ball with forward weight transfer, using a simple, compact preparation that doesn't demand the timing, motor control, or physical maturity those advanced mechanics require.

Skipping this foundation doesn't produce faster results. It produces a specific set of consequences — injury, inconsistency, discouragement, and, far too often, a child who quits the sport before they ever get to find out how good they could have been. Each of those outcomes is predictable. And each of them is preventable.

What Proper Progression Actually Looks Like

Every beginner — regardless of age — starts by learning the Forehand Drive and Backhand Drive. Closed or neutral stance, racket back pointing toward the back fence, low-to-high swing path through the ball. That low-to-high path is what naturally generates topspin, keeping the ball in the court and building the stroke that everything else is built on. The goal in this first stage is one thing: learning what it feels like to drive through the ball correctly. Forward weight transfer from back foot to front foot. Full extension through contact. The closed stance makes all of this teachable because it aligns the body toward the target, eliminating rotational demands the player isn't ready for yet.

Once a player can produce that drive consistently, we add a small loop take-back — a more rhythmic preparation that accommodates faster balls. The stance moves toward neutral to semi-open. Nothing changes at the point of contact or through the follow-through. The drive mechanics stay the same. The preparation above and behind the player becomes more dynamic.

Only after that loop is solid and connected to a real drive through the ball do we begin introducing semi-open and then open stances — starting with the attacking semi-open and graduating to the defensive open stance only when the player has the core strength, hip stability, and motor control to execute it safely. This is where rotational force enters: loading the back hip, rotating through contact, generating power through the kinetic chain without relying on forward momentum.

This is not a slow approach. The drive foundation typically takes two to ten lessons. What takes time is making sure each layer is genuinely connected before the next one is added. A player who reaches open stance with a solid foundation doesn't have to unlearn anything. They add. A player pushed into open stance from day one spends years — sometimes a lifetime — trying to fix mechanics that were never right to begin with.

I return to the drive foundation whenever a player needs to reset their mechanics. It is not a step backward. It is the biomechanical home base every player carries through their entire development.

What the Research Says About Open Stance and Young Players

The stance debate is real and ongoing in the coaching world. But the biomechanics research on young athletes is worth understanding before dismissing the progression-first approach.

A 2021 study in the Journal of Sports Sciences compared knee loading across three common forehand stances and found that the defensive open stance produces significantly greater knee compressive forces, abduction torques, and loading patterns associated with patellar tendinopathy, Osgood-Schlatter disease, meniscus tears, and ACL and MCL injuries. The researchers explicitly noted that these loads are "more extreme, especially in young players." (Martin et al., 2021)

A companion study on hip biomechanics found the same pattern — hip motion and loading are more extreme in the defensive open stance — and recommended that coaches encourage players toward more neutral stances when injury risk is a concern, particularly for players experiencing hip pain. (Martin et al., American Journal of Sports Medicine)

A peer-reviewed review of forehand mechanics published in PMC acknowledged that "there remains considerable scope for future research to longitudinally examine the inter-relationships between different teaching methodologies, equipment scaling, and forehand mechanics" in young players. The definitive comparison study hasn't been done yet — but the loading data points clearly in one direction. Teaching a child to default to open stance before they have the physical development to support it is not modern coaching. It is a loading risk that compounds with every repetition.

The biomechanics literature also describes injury as "often associated with alterations in the flow of energy across segments — if one segment is removed from the kinetic chain, there is increased reliance on others to accommodate the loss, which may lead to tissue overload." (Elliott, Biomechanics and Tennis, PMC) A player who skips the drive foundation and defaults to arm-dominant strokes is living in exactly that pattern — and the shoulder, elbow, and wrist pay the price.

What Happens When the Foundation Is Skipped

It is worth naming these outcomes directly, because parents deserve to understand what is actually at stake when a program rushes young players into advanced technique.

Injury. Overuse injuries in young tennis players are rarely caused by a single event. They accumulate. When the arm is doing the work the legs, hips, and core should be doing, the shoulder, elbow, and wrist absorb repetitive stress they were never designed to handle alone. This is not a freak accident. It is a predictable outcome of improper loading on a developing body.

Inconsistency and Losses. A player without a solid drive foundation will hit well in practice and struggle in matches. Strokes that look fine at low speed and low pressure break down when the ball gets faster and the score gets tight. That gap between practice performance and match performance is one of the most frustrating experiences in junior tennis — and it is almost always a foundation problem, not a mental or effort problem.

Discouragement. A hurt child knows why they're struggling. A child whose foundation was skipped just thinks they're bad at tennis. Research on youth sport dropout consistently identifies perceived competence as the primary driver of continued participation — kids stay in sports they feel capable in. A player whose mechanics produce unpredictable results never builds that sense of capability, no matter how many lessons they take or how hard they work.

Burnout. When high training volume is combined with a broken technical foundation, the result is a child working extremely hard for results that don't come. That is the burnout formula: sustained effort without reward. The physical fatigue compounds the frustration. The sport stops feeling like something worth doing.

Quitting Before They Get Good. Every experienced coach has watched it happen: the player with real talent and real potential who leaves the sport at 12 or 13 because nothing is working and nobody can explain why. The ceiling they cannot break through was built in lessons one through five — when the foundation was skipped in favor of techniques they were never ready for. By the time that ceiling became obvious, the player was already gone.

The hard truth is that these are not worst-case scenarios. They are the predictable, documented outcomes of rushing young athletes into technique their bodies and nervous systems are not ready for. A qualified coach doesn't just know what to teach. They know when — and why the sequence matters as much as the content.

Early Specialization Compounds Every Risk

Technique progression matters — but so does volume. A 2025 clinical review co-authored with USTA Sport Science Commission researchers concluded that early sport specialization in tennis leads to increased injury risk, decreased career longevity, and higher burnout rates — with no corresponding benefit to long-term performance. Tennis already has the highest early specialization rate of any sport studied at 46.7%. When you combine high training volume with a broken technical foundation — a child working hard and frequently with mechanics that were never right — every risk factor compounds simultaneously.

Current evidence-based guidelines for junior tennis players recommend avoiding single-sport specialization before age 12, training no more hours per week than your age in years, a maximum of 12 hours of organized tennis per week, a minimum of 2 hours per week of injury prevention training, and no more than 12 tournaments per year. (Thurber, Kantrowitz, Wang, Jayanthi & Colvin, Sports Health 2025)

What to Look for When Choosing a Tennis Program

When evaluating a coach or program for your child, the question isn't whether they've played at a high level — it's whether they understand how children learn movement, what the research says about load and injury risk, and whether they teach a progression or just a style. A few questions worth asking:

• What does your stroke progression look like for a brand-new beginner?

• At what point do you introduce open stance — and why then?

• How do you know when a player is ready for the next stage?

• What is your approach to managing training volume for kids under 12?

• Do you hold formal training in sport science, child development, or coaching methodology — beyond your playing experience?

A coach who can answer those questions with specifics — not just "it's what I was taught" or "it's what the pros do" — is a coach who has thought carefully about development, not just technique. That distinction is what keeps young athletes healthy, confident, and in the sport long enough to find out how good they can actually be.

References

Martin, C., Sorel, A., Touzard, P., Bideau, B., Gaborit, R., DeGroot, H., & Kulpa, R. (2021). Influence of the Forehand Stance on Knee Biomechanics: Implications for Potential Injury Risks in Tennis Players. Journal of Sports Sciences, 39(9), 992–1000.

Martin, C. et al. Can the Open Stance Forehand Increase the Risk of Hip Injuries in Tennis Players? American Journal of Sports Medicine.

Reid, M. & Elliott, B. Biomechanics and Tennis. British Journal of Sports Medicine / PMC.

Elliott, B. Biomechanics and Tennis. PMC. (Kinetic Chain and Injury Mechanisms.)

Thurber, L., Kantrowitz, D.E., Wang, K.C., Jayanthi, N., & Colvin, A. (2025). Early Sport Specialization and Intense Training in Junior Tennis Players: A Sport-Specific Review. Sports Health.

Jayanthi, N. et al. Sports-Specialized Intensive Training and the Risk of Injury in Young Athletes. American Journal of Sports Medicine.