Pumas, the FIFA break and four empty lockers: Solari tests his squad depth before Atlético San Luis

A Marseille night, and four names

At three in the morning in Marseille, I rewound the recording of the Pumas match against Atlas and froze it at the 71st minute. Álvaro Angulo had just returned from injury, collected the ball on the left flank, pushed forward one beat, and crossed. The ball sailed a little long, and no one attacked it. I wrote in my notebook: Angulo, 71', cross from the left, unclaimed. Then I switched off the tape, brewed tea, and opened the Liga MX calendar.

Ten days. That is the gap between that night and the day Pumas host Atlético San Luis at the Estadio Olímpico Universitario, in Jornada 10.

Ten days, and four names will be absent from La Cantera: Álvaro Angulo, Adalberto Carrasquilla, Pedro Vite, Robert Morales.

Four men, four lines of the pitch, one break.

I am 66 years old. I work in the transfer market in Marseille, which means my daily job is to price players and to price the gaps they leave behind. After thirty years of that work, I arrived at something that sounds banal: the calendar is not the backdrop of football. The calendar is a tactical variable. When FIFA inserts an international window into the middle of a month, it does not simply remove four human beings. It removes shared training sessions, repeated combinations, and the one thing no metric on earth measures: familiarity of the foot.

For a team searching for connection like Pumas, this break arrives at the worst possible moment.

Or at the best possible moment. I will save that answer for the end.

Context: a compressed season

Liga MX runs on a logic of its own, different from the rest of Europe. The league splits the year into two short tournaments of seventeen matchdays each, plus playoffs, plus the Leagues Cup, plus the international windows. The result is that match density is squeezed into peak weeks, and every time FIFA opens a window, coaching staffs have to rebuild their personnel maths from scratch.

Esteban Solari, an Argentine, is leading Pumas through a building phase. He has been placed in an uncomfortable position: assembling a new playing style while facing an injury list longer than expected, and while accepting that his most important players are regularly absent on national duty.

Pumas' injury list is not short. Sebastián Córdova, one of the squad's most creative outlets, has been missing for an extended period. Álvaro Angulo also sat out, and only returned in the Atlas match with clear signs that he is not yet at his best — the 71st-minute cross I logged is one example.

Alongside that sits a structural detail worth attention: Pumas contributed no players at all to the Mexico national team in this window. César Huerta, who was expected to make the squad list, was held back because of physical discomfort in the preceding weeks, and the coaching staff chose caution.

In other words: four players leave, and not one of them joins Mexico.

That is a signal about how this club is built, and I will return to it. First, it is worth being precise about how large each gap actually is.

Analysis: four gaps that are not scattered — they sit in one band

This is the first thing I want to put in bold, because it changes the entire reading of the situation: the four absentees are not distributed across the pitch — three of the four play in the same band of midfield, and that is why the impact multiplies rather than adds.

Adalberto Carrasquilla is a central midfielder, captain of Panama, and the man who sets the tempo. In Solari's structure, he is the link who receives from the centre-backs in the low block, turns, and progresses the ball through midfield. Losing him means losing the ability to escape the first pressing zone.

Pedro Vite, an Ecuadorian, plays slightly higher, drifting between the lines, carrying the ball at speed, and arriving in the box from the second line. He is the kind of midfielder who forces defenders to decide in a split second, and players who force opponents to decide are the asset I value most in the transfer market.

Álvaro Angulo, a Colombian, is an advanced left-back. In matches where Pumas control the ball, he generates width on the left and pins the opposing full-back deep. When he is absent, the team loses a source of space creation, not merely a defender.

Robert Morales, a Paraguayan forward, is the alternative up front. His role is not to score thirty goals a season, but to give Solari a different attacking shape: a number nine who occupies the box, holds the ball with his back to goal, and lays off for runners from the second line.

Three midfielders and one full-back. Picture the Pumas midfield as a chain of three or four links. Now remove two, occasionally three. The machine does not break entirely. It runs slower, it judders, and it makes noise.

In my personal log of Pumas matches this season, I track four variables: passes into the final third, losses of possession in the defensive half, sequences of three or more passes, and situations where a midfielder receives between the opponent's defensive and midfield lines. All four variables depend directly on Carrasquilla and Vite. Without them, three of the four will fall.

I do not use rhetoric. I use ratios.

Method: why I do not trust one match

In the summer of 2026, I learned to trust something no one had yet named: xG. When Opta first published expected goals tables for Ligue 1, I did not believe them immediately. I hand-recorded 1,204 shots from twenty teams across the first half of the 2026-18 season, cross-checked them against actual goals, and arrived at a correlation coefficient of 0.84. Colleagues told me my reaction was slow. I needed verification before use.

That principle applies unchanged to the Pumas case. A team losing four players does not automatically become weaker. It becomes weaker or stronger depending on three things: the quality of the replacements, the degree to which the structure depends on the departed players, and the specific opponent in the specific match.

Atlético San Luis, the Jornada 10 opponent, is precisely the kind of team that makes this problem uncomfortable. They do not need possession to hurt you. They defend in a relatively low block, accept ceding the ball, and punish teams that circulate slowly or expose the ball in midfield. That is exactly the scenario a Pumas side missing Carrasquilla and Vite is prone to falling into.

The Estadio Olímpico Universitario adds another variable. A large pitch, an altitude of roughly 2,200 metres above sea level, thin air. For visiting teams, it is a fitness test. For the home side, it is an accumulated advantage over time — but only if the home side has enough players to run. A thin midfield facing altitude for ninety minutes is a risk formula.

The trap of the word rhythm

In Mexico, people use the word rhythm a great deal. A team loses rhythm. A team needs to find rhythm again. Solari said the break arrived at an inconvenient moment, and that phrasing reflects a widespread belief in coaching circles: players only develop understanding by playing together continuously.

That belief has merit, but it has not been fully tested.

I did what I always do when a break appears: I set up three competing hypotheses and let the data decide which one stands.

Hypothesis one: the break breaks the connection, Pumas enter the match with a fragmented structure, and that shows up in misplaced passes in the first twenty minutes.

Hypothesis two: the break is an uninterrupted training block. For a team without an identity, two weeks of training not interrupted by matches is worth more than two matches interrupted by injuries. In this case, Pumas enter the match with a clearer structure, not a foggier one.

Hypothesis three: the impact is close to zero, and the result is decided by individual quality and finishing variance.

All three can be tested with match data, and I will test them after Jornada 10 ends. What I refuse to do is pick a conclusion in advance and then go looking for data to confirm it.

What analysts overlook: who stays, not who leaves

This is where I want to break from the crowd, and also where most FIFA-break reporting makes its error.

They count who leaves. They do not count who stays.

Pumas stay with a group of players who get two uninterrupted weeks under the same syllabus, with no flights, no match in between, no risk of injury in a match the club does not need to win. For Sebastián Córdova, those two weeks are two weeks closer to a return. For Angulo, they are two weeks to recover fitness instead of playing three matches in seven days.

And for a coach still searching for his best eleven, two weeks without a match are two weeks to test options he would not normally dare to test.

I call this the laboratory effect. In my industry, we hunt for abnormal contexts because they let us measure what normal contexts conceal. In 2026, when European football returned to empty stadiums, I sat in Marseille and analysed 81 matches without crowds. Home teams won only 26 percent of those games, compared with 43 percent before the pandemic. Those two weeks gave me data I could not have obtained twenty years earlier, because there was no way to separate home advantage from crowd noise.

An empty stadium is the finest laboratory for anyone who loves data.

The FIFA window, on a smaller scale, serves a similar function. It separates a team from its own habits, and during that window you see the real structure.

The real structure of Pumas, and what it says about the market

A player is a variable, the market is a function, but most of my life has been a constant.

I say that because I follow Liga MX through the eyes of someone who prices players, and one of the clearest problems I see in the Latin American market is the excessive premium placed on youthful potential — and the corresponding neglect of dressing-room chemistry.

A twenty-one-year-old with high speed and impressive passing data will always be valued above a twenty-nine-year-old with the same actual output. That is the market's law, and I am not complaining about it. But I do record its consequences: clubs buy more potential than operability, and clubs that do so frequently end up with an expensive squad and no team.

Pumas, in that context, present a notable structure. The four most important players called up are all foreign. Not one of them joins Mexico. César Huerta, the most highly regarded domestic player, was held back because of fitness issues. No other domestic player appears on the squad list.

A major Mexican club with a domestic spine so thin that the national team needs none of its players. That is information I consider more important than the result of a single match.

On the other side of the story sits another factor analysts usually ignore: financial reporting pressure. When a club has to answer to numbers each period, sporting decisions and financial decisions frequently conflict. A player with high resale value will be given more opportunity than a player with greater footballing value but lower transfer value. That decision is not wrong as business. It simply does not help the team win matches.

For Pumas, the question over these two weeks is very concrete: with three midfielders gone, will Solari give the chance to a highly valued youngster, or to a less promising player who understands the structure better?

The answer will reveal which logic runs this club.

Why PPDA cannot answer the question

Croatia won a tournament with low PPDA? Then PPDA is a letter, not a truth.

I say this because there is a very common mode of analysis when discussing teams that lose a central midfielder: people reach for PPDA — passes allowed per defensive action — to demonstrate that the team will lose its pressing capacity.

That metric is useful. It is not sufficient.

PPDA measures pressing intensity and position, but it does not measure who makes the decision inside that defensive action. A team can hold its PPDA steady while its defensive quality falls sharply, because the metric counts actions, not the value of actions. If a young player presses enthusiastically but at the wrong moment, PPDA stays flat or even improves, while the midfield is torn open behind him.

With Pumas, I will not use PPDA to predict the Atlético San Luis match. I will use three other metrics: the number of times the opponent successfully receives the ball in the gap between the midfield and defensive lines, the number of long passes required to bypass the first pressing zone, and the average time to move the ball from the defensive half into the opponent's half.

Those three answer the concrete question: can Pumas' backup midfield carry the ball through the middle third?

If the answer is no, every argument about match rhythm becomes meaningless. No rhythm helps a midfield that cannot hold the ball.

Three scenarios for Jornada 10

I always lay out possible scenarios before a match, because that is the only way analysis can be falsified. If I offer a single scenario, I am not analysing. I am predicting by feel.

Scenario one: Pumas control over 60 percent of possession, overload the left flank with an alternative to Angulo, and struggle to move the ball into the box. This produces many shots from distance and few genuine chances. Atlético San Luis wait.

Scenario two: Solari changes shape, plays two central midfielders instead of three, and tucks a winger inside to compensate for the shortage in midfield. This reduces attacking width but increases control of the central corridor. This is the structurally soundest option in my view.

Scenario three: Pumas accept ceding possession and play in transition. This depends on the speed of the wide players and the hold-up play of the central striker. With Morales absent, this option weakens markedly.

Three scenarios, three different degrees of dependence on the four departed players. None fully avoids the impact.

The blind spot: we are measuring the wrong thing

Here I want to give space to a systematic error in how situations like this are read.

When four players are called up, the media counts four. Four pillars. Four gaps. But the correct unit of measurement is not the number of players — it is the number of shared minutes lost between specific pairs of players.

Imagine Carrasquilla and Pumas' left-sided centre-back have played thousands of minutes alongside each other. Losing Carrasquilla does not just remove a midfielder. It removes the automatic coordination of a partnership. If the replacement is a youngster who has never played beside that centre-back, their connection minutes are close to zero, and passes that once took one beat now take two or three.

Two or three beats. At professional level, that is the entire difference between a counterattack snuffed out and a goal.

This is why I never accept the answer "we have replacements". Everyone has replacements. The question is how many minutes the replacement has played alongside the exact players around him.

I am 66 years old, old enough to know that a number never tells a story unless you ask it a question.

The contrarian angle: the break may be a gift

Now I return to the question I left open at the start.

The majority says the break harms Pumas. I argue that claim is true under one condition and false under another, and the difference lies in the state of the team before the break.

For a team that is settled, playing well, winning consistently, a break is an interruption. It breaks momentum.

For a team that is unsettled, patching its squad, losing players to injury, a break is a block of time with value. It does not break momentum, because there is no momentum to break.

Pumas belong to the second group.

That means I expect the opposite of the popular expectation: Pumas may enter Jornada 10 with a clearer structure than before the break, not a foggier one. Not because the break works miracles, but because it gives Solari what a dense calendar does not: time to teach.

There is, of course, one condition. If the four players return tired or injured, the balance flips instantly, because Pumas will have lost both shared training time and players. That is the biggest risk of these two weeks, and it lies outside Solari's control.

This is why I always state necessary and sufficient conditions before praising or criticising a system. A conclusion without conditions is a slogan.

On the transfer market: gaps have a price

There is an aspect I track as a transfer market professional, and it is rarely discussed in match reports.

When a player is absent on national duty, his market value does not fall. But the value of his replacement can rise. If a young Pumas midfielder performs well across two or three matches in place of Carrasquilla, his valuation shifts within weeks, and that affects subsequent negotiations — both buy-side and sell-side.

Matches played during a FIFA window are a valuation laboratory.

Conversely, clubs that understand this can use the window as a tool. A club wanting to sell a substitute will play him during this period. A club wanting to keep a youngster will leave him on the bench to prevent his valuation from being pushed up.

I have seen deals change simply because two matches took place while the national team was in camp.

For Pumas, the tactical question and the market question converge over these two weeks: who plays, and what is that player worth afterwards.

What I will track

I will track four things in the Atlético San Luis match, and I write them here so they can be contradicted.

First, the number of first passes from centre-back to central midfielder in the opening fifteen minutes. If that number is abnormally low, Pumas are being forced long, and the structure has failed.

Second, the average position of the two full-backs. If both push high simultaneously, Solari has chosen to compensate for Angulo with width rather than control.

Third, the number of counterattacks Atlético San Luis generate from midfield. This is the most direct measure of the quality of the backup midfield.

Fourth, the minutes played by young substitutes. If Solari uses several youngsters for more than thirty minutes, this club is in a building phase, not a title-contending phase. And supporters should know that before placing the wrong expectations.

Four metrics, four answers, one match.

Some matches are won on the pitch and lost on the spreadsheet – I choose the spreadsheet.

Closing

In my profession, people often ask how to tell whether a team is improving. The popular answer is to look at results. I do not use that method.

The method I use is to look at how many options a coach can deploy when his best players are taken away. A team that is improving is not a team that wins with a full squad. It is a team that keeps its shape when short of players.

These two weeks will give Pumas an answer that forty-five minutes of a winning performance cannot give. If Solari builds a backup midfield capable of carrying the ball, this club has a season ahead of it. If not, the Jornada 10 gap will be only the first instalment of a longer problem.

And when the four players return from national duty, Solari will face a far harder question than substitution: will he dare to keep the men who performed well in their absence, or will he restore them to the eleven because of their names?

That is the question every club faces, and very few answer it correctly.