Pumas' defense did not collapse — it buried itself with tackles inside the box

I spent two weeks rewatching six Pumas matches, not to find goals, but to count how many times their defenders touched an opponent inside the box. The final number made me switch off my own podcast mid-recording: four penalties conceded in six matches, two of them coming in games where Pumas gave away two penalties. For a defense that was considered one of Liga MX's best last tournament, this is an unthinkable reversal. Esteban Solari did not inherit a weak defense in terms of personnel; he inherited a defense that has forgotten how to keep its hands and feet in the right place at the right moment. In modern football, when you make contact at the wrong moment inside the box, the price goes far beyond a goal from open play — the price is a penalty, which is many times more expensive. I am writing this before Pumas face Cruz Azul, the Mexican champion, a side my own source analysis describes as having "a good relationship with goals." A defense addicted to fouling inside the box meets an attack addicted to scoring. It is a limit test scheduled in advance, and I want to put my reputation on the table before the whistle blows. To understand why four penalties in six matches is a seismic signal, you need to understand how Liga MX operates. The Mexican league runs on two short tournaments — Apertura and Clausura — each lasting roughly seventeen rounds, ending in the Liguilla playoff to decide the champion. This short-tournament structure compresses every emotional cycle. A run of six matches without a clean sheet is not a season-long crisis, but it accounts for more than a third of the entire tournament, enough to push a team from the title race into dangerous territory. Pumas UNAM is one of Mexico's most storied clubs, part of the "grande" group alongside América, Chivas and Cruz Azul. That means the tolerance threshold from fans and media is far lower than for mid-table sides. A mid-table finish might be a success for Necaxa, but for Pumas it is a failure. When a "grande" plays below standard, every touch is dissected, every mistake replayed dozens of times. That is the environment this club is stepping into, and it will amplify every weakness. Last tournament, Pumas ranked among Liga MX's best defenses. That is the expectation baseline the club now faces. This season, under new head coach Esteban Solari, the club has entered a rebuilding cycle. Solari brought new ideas, and by the source's own admission, the team is still in the process of adapting to them. He has also never had a full squad at his disposal. That is the context for everything that follows. Now to the data. Six consecutive matches without a clean sheet. Ten goals conceded, roughly 1.67 per match. Four penalties in six matches, or 0.67 per match. To help you grasp how abnormal that last number is: a normal defense needs several matches, even several weeks, to concede a single penalty. Pumas concede at a rate of nearly one every match and a half. And here is the key point I want you to remember: the problem is not the volume of chances opponents create, but the discipline of contact inside the box. When a defense concedes a lot, there are two entirely different scenarios. First: opponents create countless chances, the defense is structurally overwhelmed, and goals come from open play, from fluid combinations. Second: the defense is not overwhelmed, but hands the opponent an advantage through rash, mistimed challenges, especially inside the box. Pumas are in the second scenario. Four penalties are undeniable proof. I remember the feeling of rewatching Rubén Duarte's foul against Tijuana — the incident that led to the penalty Gilberto Mora converted into a brace. It was a challenge where, had Duarte stayed calm for half a second longer, he could have held his ground and let a teammate cover. Instead, he lunged in, caught the opponent's leg, and the referee pointed to the spot. That is not an isolated individual error. It is a pattern. Salles-Lamonge's penalty against Atlético de San Luis, and the two penalties in another match, all belong to the same pattern: a Pumas defender touching an opponent at the exact moment a good player must never touch. Mbappé does not erase statistics, he burns them in the most beautiful way. Here, Pumas' defenders are also burning their own statistics, just in the ugliest way possible. What struck me most in the source analysis is how precisely the author localizes the problem: the weakness lies in aerial play and duels inside the box, and the low block is the area needing the most work. This is a diagnosis so accurate that I want to emphasize it. A low block, in tactical language, is a defensive approach that drops deep into your own half, conceding space higher up the pitch to protect the box. When a team chooses a low block, it accepts that the opponent will have the ball in the final third, but believes it can organize well inside the box to deal with the final balls. Pumas' problem lies at that very final point. They organize the low block, they drop into the right positions, but when the ball approaches the box, they lose discipline. Aerial play — crosses, corners, lofted balls — becomes a death zone. And in those situations, the difference between a good defense and a bad one is not speed or strength, but timing. A good defender knows when to challenge and when to hold, when to touch and when to let the opponent put himself in trouble. Pumas' defenders are touching at the wrong moment, and referees are penalizing them correctly. Southgate did not collapse, he buried himself with safety. At Pumas, the story has a different variation: Solari's defense is not defeated by safety, it buries itself through mistimed aggression. That is an important nuance. When people call a defense "weak," they usually picture slow defenders, beaten for pace, left behind. Pumas are not weak in that sense. Their problem is the opposite: they are too eager, too keen to challenge, too keen to prove they are present in every play. And inside the box, excessive eagerness is the poison. Look at the ten goals conceded. Subtract the four from penalties, and you have six from open play across six matches — one goal per match from open play. That number is not bad for a defense in transition. It shows Pumas' open-play defensive block does not collapse entirely. The problem is concentrated in specific moments: set pieces, box duels, split-second wrong decisions. This is good news and bad news at once. Good news: the problem is fixable through coaching. Bad news: if it is not fixed, it will recur, and it will recur in the most important match. At this point, I must discuss personnel, because no defense is stable without a stable center-back pairing. Solari has rotated between Ángel Azuaje and Rubén Duarte to partner Nathan Silva. Rotating a center-back is one of the most clearly documented drivers of miscommunication inside the box. When two center-backs do not understand each other, they overlap positions, or both lunge at the same ball, or both stand and wait. In a low block, where every decision is made in a split second, this lack of understanding is a death sentence. Nathan Silva is the only constant in the heart of the defense. That is both an anchor and a risk. An anchor because he is the only one maintaining positional stability. A risk because if Silva is absent or dips, the entire defense loses its only anchor. And on the left flank, Álvaro Angulo — expected to cover and provide width — has been absent due to an injury sustained in the Leagues Cup, compounded by a call-up to the Colombia national team. Two problems stacking: injury and international duty. This is the effect analysts call the "FIFA virus" — when international matches and cross-border competitions drain club resources. What is notable is that the Leagues Cup — the joint MLS and Liga MX competition — is itself the source of Angulo's injury. This is a textbook example of how cross-border calendars directly affect Liga MX squad depth. When you lose a left-back to an international friendly competition, and simultaneously lose him to national-team duty, you are paying a depth penalty that clubs with fewer internationals do not bear. For a rebuilding side, this is a doubled burden. Statistics give me a body, but the match is what breathes a soul into it. Looking at a stats table, you see ten goals conceded and four penalties. But when you watch the match, you see an organized team, with ideas, with an attack playing well — and then destroying itself through a single moment of carelessness. My own source analysis notes that Pumas' attack is delivering a "promising performance," while the defense is "not up to standard." This is an internal divergence: results are being dragged down almost entirely by one unit, not by a wholesale team collapse. This divergence carries deep strategic meaning. It means Pumas do not need to rebuild from scratch. They do not need to change their attacking philosophy, do not need to overhaul the attack. They need to fix one specific area: contact discipline inside the box and aerial defensive organization. This is the kind of problem a focused week of training can clearly improve — provided it is genuinely a discipline problem, and not a deeper structural defect. I will return to that question later. Now let me talk about the upcoming match. Cruz Azul, the Mexican champion, described as having "a good relationship with goals." This is the kind of opponent that is a nightmare for any defense with discipline issues. A strong attacking side will constantly feed balls into the box, constantly create duel situations, constantly force defenders into split-second decisions. If Pumas keep their current fouling pattern, Cruz Azul will be the biggest beneficiary. I would not be surprised if this match produces at least one more penalty. What makes this situation more tense is the pressure on Solari. He is a new coach trying to install his ideas into an incomplete squad. If Pumas lose heavily to Cruz Azul, the "difficult moment" story will turn into a "crisis" story. And in Mexican football, where the short-tournament cycle makes everything happen twice as fast, that pressure can turn into sack calls within days. I have followed Liga MX long enough to know that media cycles here are short but ferocious. A "grande" playing below standard will be dissected match by match, touch by touch. Every conceded penalty will be replayed dozens of times on television. Every defender's mistake will become the week's talking point. That is the environment Pumas are stepping into. There is one dimension I consider important but rarely discussed: Pumas are facing a personnel-management problem. Solari has never had a full squad. He must choose between Azuaje and Duarte — a decision that in itself reveals the lack of a settled hierarchy in defense. The fact that Duarte was directly implicated in a penalty, then benched in favor of Azuaje, may be a soft disciplinary measure, or a shift in tactical priority. Either way, it shows Solari is actively trying to solve the problem, but has not yet established a stable center-back pairing. In terms of risk, this is a situation I place at medium to high. The highest risk is the immediate fixture: a leaky defense meeting the champion. The second is the penalty streak — it is fixable, but if unfixed, it escalates. The third is the instability of the center-back pairing. The fourth is Angulo's absence. And the fifth is media pressure that could turn into a coaching-job crisis. What I want to emphasize is that there is no financial or governance element in this story. This is a purely sporting story — about what happens on the pitch. That is why it has value as a clean case study: a defensive-discipline problem meeting a difficult opponent. No contracts, no transfers, no rule violations. Just defenders touching the wrong man at the wrong time. At this point, I must be honest with you about where I could be wrong. My entire argument rests on one assumption: that Pumas' penalty problem is a fixable discipline issue, not a symptom of a deeper structural defect. If I am wrong about that assumption, all my conclusions collapse. There is another reading of the same data set. Four penalties in six matches may not be a discipline problem, but a sign that Pumas' defenders are routinely put in positions where they must foul. If the midfield leaves too much space, if the full-backs are beaten repeatedly, if the defensive block is stretched so far that center-backs constantly face one-on-one situations inside the box, then fouling becomes the inevitable consequence of a broken system, not a bad individual choice. In that case, fixing individual discipline solves nothing, because the root lies in structure. And there is a second weakness in my argument: sample size. Six matches is a meaningful sample, but it does not define a season. One clean sheet and the story can flip. A penalty rate of 0.67 per match is statistically unsustainable — by the law of regression to the mean, it will almost certainly fall. But the direction of regression depends on whether it is a fixable discipline problem or a persistent structural defect. This is the question the Cruz Azul match will begin to answer. Finally, I must acknowledge that Solari has a legitimate excuse: he has never had a full squad. The absence of Angulo on the left, plus the need to rotate center-backs, are objective constraints. If I criticize the defense while ignoring those constraints, I am judging unfairly. But at the same time, I also wonder whether emphasizing "an incomplete squad" is a way of building a shield for Solari himself — a way of blaming circumstances rather than coaching. I leave that question open. My prediction, verifiable: Pumas will concede at least one penalty in their next two matches, including the Cruz Azul fixture, unless Solari significantly changes how the defense approaches duels inside the box. If they keep a clean sheet against Cruz Azul without changing anything in personnel or approach, I will publicly admit I misread the nature of the problem. That is how I put my reputation on the table — not by saying "I told you so," but by saying it before it happens. The core question is whether Pumas' defense is fouling because it has lost discipline — fixable — or because it is being put in positions where fouling is unavoidable — which needs a much bigger operation. The Cruz Azul match will begin to reveal the answer. And I will be watching, with a sheet of paper and a pen, counting every duel inside the box. Because in football, a defense does not collapse because it is beaten — it collapses because it hands the opponent an advantage, one penalty at a time.