The Track Begins With a Ten-Year-Old: Rosemead and the Silent Base of American Swimming

I read that job posting three times. By the third time, I understood why I could not look away.

It was a short notice, less than a page long, posted on the website of Rosemead Rapids — a small swim club in Rosemead, a suburb east of Los Angeles, in the state of California. The club was looking for a part-time assistant coach to oversee two development groups named Development Group 1 and Development Group 2. The swimmers in these groups are all ten years old and under. The work takes place in the evenings and on weekends, at the Rosemead Aquatics Center. The person chosen will report directly to the head coach, work closely with the entire coaching staff, and be present at the club's meets.

There is no gold medal in it. No world record. No million-dollar sponsorship. Just a club at the lowest layer of the American swimming pyramid, looking for someone to teach ten-year-olds how to place their hands in the water correctly.

That is exactly where I stopped.

In eighteen years of this work, I have learned one thing: the moments that decide the fate of a sport almost never happen in front of a television camera. They happen where no one is filming. They happen at six o'clock on a Tuesday evening, when the water is still warm from the previous group's session, and a seven-year-old is trying to learn how to exhale underwater without panicking.

I do not read the scoreboard. I read the track in their eyes. But this time, the person I needed to read was the one who would teach those children how to run on the surface of the water.

Context: a system built from the bottom up

To understand why this small notice matters, you have to understand the system it sits inside.

American swimming operates on a model quite different from many countries. In not a few places around the world, swimming is managed top-down by the state: national training centers, national teams, then a system of youth academies. In America, the foundation lies in local clubs, operating under the governance of USA Swimming — the national governing body for competitive swimming.

This system has a clear tiered structure. From the local club level, athletes move up to regional meets, then zones, then the national level. Rosemead Rapids, located in Southern California, belongs to the Southern California Section — one of the most densely packed and competitive swimming regions in the country. The greater Los Angeles area alone has dozens of high-quality clubs, from long-established names to emerging programs.

That means Rosemead Rapids does not only compete on results. They compete for swimmers, for coaches, and for pool time. Every practice slot, every coaching slot, every family that decides to commit to the club is the outcome of a quiet competition.

In that system, the position Rosemead Rapids is hiring for is not a glamorous one. It sits at the very bottom of the pyramid, where children first meet the water. But precisely because it sits at the bottom, it is the place that determines what the top will look like ten years from now.

Put two events side by side. On one hand, Los Angeles is preparing to host the 2028 Summer Olympics — the city's third Games, after 2026 and 2026. On the other hand, a club less than twenty miles from downtown is looking for a part-time coach for a group of ten-year-olds. These two events are not separate. They are two ends of the same pipeline.

The ten-year-olds swimming in Rosemead today will be twelve when the 2028 Olympics open. They will not compete at these Games. But one of them, if taught correctly, could reach the national qualifying level at twenty, and could reach the Olympic stage in 2036 or 2040. The bottom layer today is the national team of fifteen years from now.

I have seen this mechanism operate from the other side. In 2026, at a World Cup quarterfinal in Sochi, I sat in the stands and watched Luka Modric repeatedly move along curved lines instead of straight ones to receive the ball. He minimized the angle of his turn, kept his field of vision, and was always where the ball would arrive. In that moment I immediately recalled the principle of running the curve in track and field — how 400-meter runners optimize centrifugal force on the bend. I wrote an analysis titled 'Modric runs like a 400-meter runner.' It was shared more than twelve thousand times.

But what I did not write then, and only now see clearly, is this: Modric's curved-run technique is not innate talent. It was forged when he was a boy in Zadar, running on cramped patches of ground, under the eye of a teacher history never recorded. The bottom layer that Rosemead Rapids is trying to fill is not an American story. It is the story of every sporting nation, everywhere.

The first ten-year window

There is a concept sports science calls the long-term development window. More than twenty years ago, researchers in motor development showed that a person's athletic foundation is largely shaped within the first ten years of systematic exposure to a discipline. This is the period when the neuromuscular system absorbs movement patterns, and those patterns, once deeply embedded, are extremely hard to change.

In swimming, this means something concrete. A child who learns to keep the body horizontal, relax the neck, and exhale steadily underwater between the ages of six and ten will carry that skill through an entire career. Conversely, a child who learns it wrong — lifting the head to breathe, tensing the neck, entering the water with a straight elbow — will spend years, perhaps forever, trying to correct it. Mistakes at the bottom do not disappear. They are merely hidden by fitness, and they surface at exactly the most important moment.

That is why the Rosemead Rapids posting stresses two phrases: 'knowledgeable on instructing technique' and 'teaching and maintaining proper technique to the best of the swimmer's ability.' At an elite club, one might talk about race tactics, pacing, optimizing the start. At this bottom layer, one talks about basic technique. And precisely because it is basic technique, it is the hardest job in the entire system.

I once witnessed the power of this bottom layer in the most personal way. In 2026, at twenty-five, I was a rookie reporter at the Asian Junior Athletics Championships in Bangkok. During the afternoon 400-meter hurdles session, I noticed an Indian athlete named Arjun Singh. He ran with an odd thirteen-step rhythm between hurdles instead of the usual fourteen. The colleagues around me said it was bad technique. But I was drawn to the anomaly. I wrote a long analysis based on feel rather than data, and my editor called it nonsense. Three months later, Arjun broke the national record with 48.72 seconds — exactly that odd rhythm.

The lesson I drew was not 'intuition is always right.' The lesson was this: anomalous technical details at the bottom layer often carry more information than any scoreboard. A ten-year-old learning to breathe in an unusual way, a coach teaching the pull in an unusual sequence — these things do not appear on the scoreboard. But they will appear on the lane line, ten years later.

The teacher and the observing eye

In the Rosemead Rapids job description there is a requirement I read over and over: the ability to recognize students who may need assistance. On the surface, it is a harmless line. But placed in the context of a group of children ten and under, it becomes one of the hardest requirements in the entire coaching profession.

What does it mean to recognize a student who needs assistance? It means recognizing that a child who cannot keep up is not lazy, but has an undiagnosed learning difficulty. It means recognizing that a child afraid of the water is not timid, but carrying some painful experience. It means distinguishing between a body developing slowly and an injury quietly forming. That is the work of an observer, not a commander.

I think of Wanjiru, the twenty-two-year-old Kenyan woman I found in a Twitter video in March 2026. At that time, every meet in the world had been postponed. Stadiums stood empty. Arjun Singh — the athlete I had once discovered — suffered a grade-three hamstring injury and was dropped from the Olympic squad. I fell into a directionless void and wrote a pessimistic condolence piece. But only two weeks later, I happened upon that video: Wanjiru running the 800 meters, training alone on a dirt road in Thika, with no coach, only a stopwatch and a notebook. I flew there at my own expense, stayed eight days, and wrote a long feature titled 'The Runner in the Silence.' It sparked a fundraising wave, and Wanjiru received thirty thousand dollars in sponsorship.

The fire of 2026 was rekindled by a Kenyan girl no one noticed. But what I learned from Wanjiru was not a touching story. What I learned was this: she had no coach, and she still ran correctly. That means correct technique does not come from the authority of a teacher, but from the ability to observe oneself. And a good coach at the bottom layer is precisely the person who teaches a child that ability — the thing that, later, when no one is beside them, they still carry.

Back to Rosemead Rapids. The requirement to 'recognize students who may need assistance' shows me the club understands that coaching at the bottom is not about transmitting technique. It is about reading people. A coach who only knows technique will produce machines that swim the right movements but do not understand why they swim. A coach who knows how to observe will produce athletes who know how to correct themselves — and that is the only thing that survives the next ten years.

The certification system and the price of seriousness

Another detail in the posting deserves a pause: the club says it will work with the right candidates to complete all necessary certifications. Behind that polite sentence lies an entire governance architecture.

USA Swimming operates a tiered coaching certification system. To stand on the deck teaching children, a coach must complete mandatory training modules, including content on safety, child protection, and anti-doping through a program run in partnership with the U.S. Anti-Doping Agency. These certifications are not a formality. They are a barrier protecting a child from an adult who is not qualified.

The club's willingness to help candidates complete certifications says two things. First, they value compliance. Second, they are in urgent need of people — otherwise they would have hired someone already fully certified. The start date is 'as soon as possible.' In club language, that phrase usually means a coach has just left, or a new group has just opened, and no one is standing on the deck to teach the children.

This is a point I want to linger on, because it exposes a structure few outsiders see. An American swim club runs on a combination of full-time and part-time staff. The head coach is usually full-time. Assistant coaches, especially at the development level, are usually part-time, working evenings and weekends. They may be college students, recent graduates, or people with other jobs during the day.

This model has clear advantages: low cost, flexibility, and an opening for young people who want to enter the profession. But it also has a fatal weakness: continuity. A ten-year-old needs a teacher beside them for many years, not someone who changes every season. When a part-time coach leaves — because they graduate, because they find a higher-paying job, because they burn out — the child loses the person who understood them.

I have seen this from the other side. In 2026, at twenty-nine, I noticed Federico Chiesa of the Italian national team in the Euro final at Wembley. Chiesa repeatedly changed direction abruptly with a hip rotation almost identical to the starting technique of 100-meter sprinters. I dug up old data and found that this player had added sprint drills to his personal program since 2026. I wrote a three-thousand-word analysis titled 'Chiesa, the boy who runs like a track athlete,' with a comparison to Arjun Singh — who by then had recovered and was competing in Tokyo. The piece was translated by a Spanish magazine, and I received an invitation to work as a commentator for a national sports channel.

But what I did not write in that piece was this: where does Chiesa's technique come from? It comes from childhood practices, from teachers no one remembers, on fields no one films. That hip rotation at Wembley is only the moment of harvest. The seed was planted fifteen years earlier, by someone Chiesa himself probably no longer remembers.

Parallel tracks

The striker runs into space, the defender runs the barrier — same sport, two fates. I wrote that line for football, but it holds in swimming too. The sprinter and the distance swimmer share one pool, obey one set of rules, but live in two different worlds. And at the bottom layer, both begin from the same point: a child afraid of the water.

What I want to say here is a truth the sports-analysis world rarely admits. We talk endlessly about tactics, systems, schools of thought. But most of what makes an elite athlete is decided before any tactic appears. It is decided at an age when the child does not yet know the concept of results. It is decided by an adult, on an afternoon, at an empty pool.

We can spend hours debating whether a coach should use three center-backs or four. I have my own view on that: the return of the three-center-back trend is not progress in football. It is how a coach avoids reputational risk when a back four gets pierced. But however we debate, that debate happens at the top layer. At the bottom, no one debates. At the bottom, there is only one question: will this child come back to the pool next week?

That is the question the Rosemead Rapids posting is trying to answer. When the club stresses 'motivating swimmers to compete at their best and over the long term,' it is not talking about medals. It is talking about retention. In youth swimming, the biggest problem is not a lack of talent. The biggest problem is quitting. Many children who swim well at ten will not be swimming at fifteen. Not because they ran out of talent, but because someone turned the pool into a frightening place.

The contrarian angle: when the part-time model becomes a systemic risk

This is where I want to go against the conventional view.

When reading a part-time job posting, most people's first reaction is to treat it as small, trivial, unworthy of discussion. A small club, a small position, a small notice. But I argue that these small notices expose the biggest risk of an entire sport.

Look at the structure. If the bottom layer — where the technique of an entire future generation is shaped — runs mainly on part-time labor, then the whole pyramid stands on a foundation with high turnover. The people teaching the most important basic movements are the people most likely to leave. That is a structural paradox, and it is not true only in America.

I see this paradox in both my sporting homelands. In Vietnam, where I was born, the swimming system relies heavily on state centers and community learn-to-swim classes, where teachers tend to stay long but lack the resources to update methods. In China, where I live and work, the selection system concentrates heavily in sports schools, producing elite athletes but sometimes at the cost of a child's diversity and joy. No system is perfect. But the American model has one difference worth learning: it puts the local club at the center, and makes the family's commitment the condition for survival.

Precisely because it puts the family at the center, the American model is forced to value the child's experience over short-term results. A club cannot survive if parents pull their children out. That creates a healthy pressure: make the pool a place the child wants to return to. And that is exactly the philosophy the Rosemead Rapids posting expresses when it speaks of 'the long-term development of the club.'

But here is the flip side. When everything relies on part-time labor and individual goodwill, quality becomes a matter of luck. A club with a good assistant coach will nurture a generation. A club without one will let that generation drift away. No mechanism guarantees that a child at this club receives the same care as a child at a club two miles away. In a system celebrated as open and fair, this is a rarely mentioned gap.

I trust intuition, but I have learned to let intuition wait for data. And the data here says: the bottom layer of American swimming runs more on personal faith than on system. That is both its strength and its weakness.

An inclusive program, a large signal

There is one detail in the posting I want to give its own place, because it says a lot about the club's direction: the requirement that the candidate have a working knowledge of Team Unify, or be willing to learn quickly.

Team Unify is an organization affiliated with USA Swimming that provides adaptive swimming programs for athletes with disabilities. Its appearance in a posting for a group of children ten and under is a signal. It shows the club has an inclusive program component, where children with disabilities take part in swimming in a suitably designed environment.

This matters more than it appears. In many sporting nations, adaptive swimming is treated as a side branch, a social activity separate from the main competitive current. But when a club folds it into the same operating system as its development group, it is saying that every child belongs in the same pool. That is a statement of values, not just of technique.

I think of what I have witnessed in Asia. In many communities, a child with a disability is often excluded from sport very early, not because they lack ability, but because there is no program. A small club on the outskirts of Los Angeles is trying to fill that gap, at the bottom layer, with a part-time coach. Seen through the eyes of statistics, this is an insignificant detail. Seen through the eyes of someone who has gone looking for forgotten stories, it is one of the most worth-writing things in the entire posting.

The talent pipeline and what it promises

Let us return to the bigger picture. American swimming operates a talent pipeline proven over decades. Local clubs nurture athletes. The best go into the college system, where they compete at a high level and keep developing. From there, a few reach the national team and the Olympic stage.

The strength of this pipeline is its depth. America does not depend on a few elite centers. It has thousands of clubs, each a mesh in the net. When one mesh weakens, the whole net still holds. But precisely because of that depth, quality at the bottom becomes the most important variable that few measure.

I once wrote that the transfer map is a map of sprints between two touchlines. In swimming, the talent map is also a map of sprints — but sprints that begin when the child does not yet know who they are racing against. The child in Rosemead today does not know they are in a race with thousands of other children across America. But that race has begun, and it begins at the bottom layer, where no one keeps time.

With the 2028 Olympics approaching, pressure will mount across the whole system. America will want to shine at home. Big training centers will be invested in. Stars will be cared for. But if the bottom layer is not cared for, then by 2036 and 2040, the national team will feel the shortfall — quietly, like an illness with no symptoms until it is too late.

What is worrying and what is hopeful

If I had to rate the risk level of this situation, I would say: medium risk, but systemic. There are three points of concern.

The first is the coaching gap. The 'as soon as possible' start date shows the club is short-staffed. Every week that passes without a new coach is a week the children practice without proper guidance. At this age, every week matters.

The second is the certification gap. The club's willingness to help candidates complete certifications is a good thing, but it also means that for a period, the person on the deck may not be fully certified. This is a temporary compliance risk, common in grassroots clubs, but a risk nonetheless.

The third, and in my view the most important, is the sustainability of the part-time position. A part-time coach has a higher turnover rate. When they leave, the child loses their teacher. And in youth swimming, that loss usually means quitting.

But beside the concerns, there is something hopeful. The way the club describes its philosophy — stressing long-term development, stressing the motivation to stay, stressing inclusion — shows it understands that the bottom layer is not a place to win quickly. It is a place to plant seeds. And those who plant seeds well are usually not remembered by name, but they are the most important people.

The hurdler does not ask how high the barrier is. Only where the road to the finish lies. The ten-year-old in Rosemead is the same. They do not ask how many meters the pool is, or how big the meet is. They ask only one thing, with their eyes: will I be allowed to come back here tomorrow?

Closing: the common language of sport

The World Cup turned out to be a ninety-minute relay. I wrote that line years ago, thinking I was talking about football. But the further I go, the more I see it holds for every sport. Swimming is also a relay. The only difference is that in swimming, the first leg is the longest, and the person who runs the first leg is almost never seen.

A part-time coach in Rosemead, working evenings and weekends, teaching ten-year-olds how to place their hands in the water — that person is running the first leg of a relay that may last twenty years. They will not see the finish. They will not even know who they handed the baton to. But without them, the race does not begin.

I used to think I wrote about big moments: a national record in Bangkok, a Modric pass in Sochi, a Chiesa hip rotation at Wembley, a Kenyan girl running alone on a dirt road. But all those moments are the result of something smaller, happening earlier, in a place no one films.

A crisis takes away the stadium, but not the trajectory. In 2026, when every stadium closed, Wanjiru still ran on her dirt road. Now, when the whole world turns its eyes to Los Angeles 2028, the children in Rosemead are still learning to breathe underwater. Their trajectory does not depend on whether there is an audience. It depends on whether someone is standing on the deck, patient, at six o'clock on a Tuesday evening.

I do not know the name of the person who will take this job. They may be a college student looking for extra income. They may be a former athlete looking to stay with the sport they love. They may stay only a few seasons and then leave. But in the time they are there, they will teach a child not to fear the water. And that child, fifteen years later, may stand on some medal podium, and no one — not even the child — will remember the name of the person who taught them their first movement.

That is the nature of the bottom layer. It is not remembered. But it is everything.

And that is why, reading a job posting less than a page long in Rosemead, I stopped three times. Not because it was about a small club. But because it was about what an entire sport is trying to do, every day, in silence: to begin again from the start, from a ten-year-old child.