Post-Phelps Swimming: Léon Marchand and the New Limits of the Medley

Post-Phelps Swimming: Léon Marchand and the New Limits of the Medley

In the notebook I have carried for seventeen years in this trade, the page dated July 28, 2026 holds a single line: "La Défense - 4:02.95". I circled that number three times in red. That night I sat in the commentary booth in Paris, less than fifty metres from the lanes, and I still remember the chill down my spine when Léon Marchand touched the wall in the men's 400-metre individual medley final. Not because of the gold medal. But because of the way a twenty-two-year-old Frenchman swam the butterfly and breaststroke legs as if the surface of the water were a score he had known by heart before he was born.

That race held hundreds of details, if you were still enough to see them. The detail I kept was not the number 4:02.95, but the moment before the start: Marchand standing motionless on the block, eyes fixed downward, not glancing at a single other lane. Seventeen years on the commentary chair taught me that sometimes it takes a whole decade to understand what a small detail like that means.

Context: the most brutal event in the water

The 400-metre individual medley has long carried the nickname "the decathlon of swimming". Four strokes strung together in a single start — butterfly, backstroke, breaststroke, freestyle — with no room for error. You cannot hide a weakness in any leg. A weak butterfly leaves you gasping at the end; a poor breaststroke costs you momentum in the third leg; by the freestyle, everything is already settled.

Michael Phelps once turned this event into his own territory. He set the world record of 4:03.84 in Beijing in 2026, and that number stood untouched for fifteen years. Across those fifteen years, world swimming repeatedly believed it had found a successor, then was disappointed. Ryan Lochte had his moment with Olympic gold in 2026 but could not sustain the peak. Other young swimmers rose and faded. The medley became a strange place: the glory was large, but those who lasted were few.

Then Marchand arrived. In July 2026, at the World Championships in Fukuoka, he broke Phelps's record with 4:02.50. A year later, in Paris, he swam 4:02.95 to break the Olympic record. What matters is not the gap in time, but the way he achieved it.

There is a detail many overlook: Marchand is coached by Bob Bowman, Phelps's own former coach, at Arizona State University. This is no meaningless coincidence. It says that a coaching method, having produced one champion, can produce the next — if the student is patient enough to absorb it. Bowman once turned Phelps into a medal-hunting machine; now he applies a different imprint to Marchand, softer, more controlled, yet still systematic down to the smallest detail.

Core analysis: the metres television never shows

At the Olympic level, most of the time is created in the metres television rarely broadcasts: underwater. The medley is not decided by a sprint on the surface, but by the number of dolphin kicks after each turn.

Marchand is famous for his underwater kicking. After every wall touch, he holds a long glide and takes more kicks than most rivals, while refusing to let his speed drop too fast. In swimming, the underwater window after a turn is a grey zone: the rules cap it at fifteen metres, but whoever reaches that limit before surfacing gains an edge. Marchand belongs to the rare group that exploits almost the full grey zone.

This explains a paradox. On the surface, the 400-metre medley looks like a story of endurance. Technical analysis shows it is a story of efficiency — every metre of glide, every kick, every angle on surfacing compounds into the final margin. Spectators see four legs; those inside the sport see dozens of small technical decisions.

Look at the structure of the legs. The butterfly sets your starting position; the backstroke is where many swimmers lose their rhythm; the breaststroke is where Marchand builds his gap; the freestyle is where he protects what he has. That order is not accidental. It reflects a racing philosophy: attack in your strongest leg, defend in your weakest, and turn every wall touch into an opportunity rather than a pause.

In the breaststroke leg, technique matters more than strength. The arm pull, the whip kick, the glide after the hands enter the water create their own rhythm. Marchand handles this leg with a composure surprising for a twenty-two-year-old. He does not frantically close the gap; he lets each stroke cycle do the work quietly. That is the mark of an athlete who understands this race is won by accumulation, not by a single flash.

In my trade, there is a line I always keep: I do not measure speed with radar, I measure it by the fear of the opponent. In Paris, that fear was plain on the faces of rivals as they surfaced after the breaststroke and realised Marchand was already ahead. That is the kind of data a scoreboard never records.

Numbers and standing

The 4:02.95 in Paris is not Marchand's highest mark — the world record of 4:02.50 he set in Fukuoka is the peak. But context matters more than the number. He won at home, before a French crowd, under the weight of a nation waiting. Swimming at home, before family and an entire country, is a far harsher psychological test than swimming abroad.

In Paris, Marchand also won gold in the 200-metre butterfly, 200-metre breaststroke and 200-metre individual medley, each with an Olympic record. Four individual gold medals at a single Olympic Games is an achievement reached by only a small group in history. Notably, he won them in four events that differ in technical essence — butterfly, breaststroke, medley — rather than concentrating on a single distance.

The peak was the night he won both the 200-metre butterfly and the 200-metre breaststroke on the same day of competition. Two events opposed in water feel, breathing and rhythm. Butterfly is constant attack; breaststroke is control and patience. Switching between those two states within hours demands a psychological flexibility not every athlete possesses.

This is the biggest difference between Marchand and many contemporary champions. In an era when specialisation is the norm, he chose the diverse path. And that diversity raises a question: is elite swimming returning to the model of the all-round athlete, or is Marchand merely an exception?

The contrarian angle: the trap of the word "successor"

After Paris, the world's media unanimously called Marchand "the new Phelps". That is a lazy framing, and I do not agree with it — not because Marchand is undeserving, but because that label hides something more important.

Phelps and Marchand belong to two different swimming eras. Records in swimming depend on context: pool depth, suit technology, timing systems, competitive density. Comparing Phelps in 2026 with Marchand in 2026 on raw numbers is an incomplete comparison. What can be compared is their impact on the sport.

A label like "successor" is also harmful in that it places an invisible pressure on a young athlete. Swimming history has no shortage of talents crushed by expectation. That pressure does not come from rivals; it comes from headlines.

I have seen this in my trade. There are young swimmers celebrated after one meet, then gone from the map two years later. Elite sport does not spare those who arrive too early without protection. Marchand, fortunately, has a system behind him: a coach who understands human limits, a swimming culture with depth, and a nation that knows patience.

One more point is rarely mentioned: the 400-metre individual medley lacks global depth compared with the freestyle events. The number of athletes regularly competing at the top level in this event is far smaller than in the 100 or 200 freestyle. The dominance of one individual, therefore, can look larger than it is. This does not diminish Marchand's achievement, but it is a reminder not to conflate monopolising one event with the global stature of an entire sport.

Conversely, the pressure on Marchand is greater than on the previous generation. Every time he appears, the arena rises. Every time he touches the wall, comparisons follow. That is the price of becoming the face of an Olympics held at home.

From Paris, looking toward Vietnam

In Vietnam, after every Olympic cycle the question returns: when will Vietnamese swimming have a figure who dominates at the continental level sustainably? Nguyễn Thị Ánh Viên once showed us that it is possible. The girl from Cần Thơ dominated the SEA Games lanes, set records repeatedly and appeared on the Olympic stage.

But Ánh Viên's story also reveals a limit of the system: one exceptional talent cannot replace an entire development pipeline. To produce an athlete who holds at world level requires decades of investment in foundations — pools, coaches, sports science, school-level physical education.

The lesson from Marchand is not the record. It is that a nation patiently built a road long enough that, when a talent appeared, that person was not alone. The individual touches the wall, but the system is what carries that person to the starting block.

Looking at Japan, where I live, the story is even clearer. Japanese swimming has a dense network of clubs, a school system tied to sport, and a culture of patience with young cohorts. They do not try to manufacture prodigies; they try not to drop talent. That difference, over decades, creates the gap.

What I keep with me

I do not write to conclude; I write to open small doors in your mind. After Paris, world swimming has one more name to mention. But if I have learned anything from seventeen years in this trade, it is this: the biggest number has never been the most important thing. What matters is the story behind that number — the story of four strokes, of thousands of turn touches in silence, of a patient system.

For Vietnam, that small door carries one line: we do not lack talent, we lack the road. And with every season that passes, that road grows a little longer — like a single dolphin kick, unnoticed, yet compounding into a gap.