Full-backs, the same positional role on the football pitch, have different understandings in different football environments.

In Europe, the birthplace of modern football, including England, France, Germany, Italy and other countries, their understanding of full-backs is more important in depth, that is, in depth defense.

This has something to do with England's 44 formation that changed the modern football tactical system, many people say that 44 is the most balanced tactical framework in the world, and it can even be said that a lot of modern tactics later are born from the transformation of 44, so how did 44 come about?

In the tactics of the ancient gods in the mouth of many fans, the two defenders were forced to give up the middle in order to make room for the retreating midfielder, but at the same time, the left midfielder retreated to participate in the defense because he had to cope with the impact of the opponent's right side, and became a left back, so a back four defense line was formed, which was also the beginning of the 44 tactic.

There are actually quite a few complex implications to be drawn from this very simple historical overview, such as the fact that attacks on the right side are usually better, because the attackers on the right side are easy to find, the right foot will be all over the street, and relatively speaking, the left foot will be difficult to find, which is a problem that has existed since history.

But this leads to another problem, that is, former Chelsea manager Gianluca O Vialli once said that right-back is usually the worst role in a team, for the simple reason that if the right-back has some defensive ability and good height, he usually develops in the middle, and if he has better skills and speed, he is usually pushed forward and plays in midfield.

That is to say, the players who usually play the position of right-back are some players who are not good enough, have poor defense, and are not good at high, so this position is usually the weakness of a team, and the left foot will be different, because the left foot will be difficult to find, so the left foot will generally be cultivated with more attention

Of course, this is talking about Europe, and it is the environment of European football from earlier times.

In some Spanish-speaking countries, such as Spain, Portugal and Brazil, as well as in some countries in South America, there is a clear difference in their understanding of full-backs from those of countries such as England, France and Italy, where the concept of the term is width.

If you ask any professional coach in Brazil what full-backs can bring to the team, nine out of ten will tell you that one will bring attacking width to the team, and the rest will definitely fail the exam.

In Eden Hamilton's "A Completely Different Game", Arsenal's full-back Laurikett once said that in Arsenal's 1949 tour win over Fluminense in Brazil, there was a situation where suddenly someone rushed up from behind and hit a shot on goal, almost scoring a goal, which scared them all.

But when they tried every possible way to find the shooter, they never found it, and only later found out that it was their full-back who rushed up to play, and Arsenal at that time was almost dumbfounded by this situation, but the Brazilian players seemed to be accustomed to it.

At that time, Brazil was far from being the football kingdom it is now, they only had two Copa America in hand, not a giant team, and in the crucial match of the 1950 World Cup held on home soil, Brazil lost to Uruguay, and lost to the opponent in the case of a draw to win the championship, precisely because of the left-back Bigod, who likes to insert assists.

Of course, Brazil later reflected on this and introspected about it, and adjusted some tactics to give full play to the threat of full-backs inserting assists, while also minimizing the hidden dangers left by full-backs, and Brazil has gradually reached the pinnacle of history in this adjustment.

But at the peak of every Brazilian dynasty, the great full-backs are indispensable.

Whether it is a full-back under the mainstream concept of depth in Europe, or a tactical width full-back as the mainstream in Spanish-speaking countries, it is actually telling everyone that if you want a team to achieve balance at the tactical level, the wing is crucial, but the wide player is often more difficult to find and more troublesome than the central player.

The full-back is a very special position in the overall tactical formation, and in the offensive state, his attacking space is often the largest in the team, that is, he can play a huge tactical role in the attack; But in a defensive state, his position is usually the first target of the opponent's attack.

First-class full-backs are hard to find, and top-level full-backs are even harder to find.

In the modern tactical system, the middle is often hoarded with heavy troops, so attacking players often like to go to the wing to find space, such as Cristiano Ronaldo, such as Henry in the early years, etc., they like to be on the wing, not only because the wing has more space, it is more suitable to play their tactical characteristics.

Also because on the wing, you only have to deal with one side of the defender, because the other side is off the pitch, which makes it easier to concentrate and play their tactical characteristics at the same time.

Because of this, in the modern tactical system, the full-back actually plays a crucial tactical role for a team, but at the same time, it is the position that is most likely to be attacked by the opponent and lead to mistakes.

Ye Qiu has always said that running a club and coaching a team is not as simple as many fans take for granted in their minds, you have to consider many aspects, such as costs.

If Ye Qiu is from the perspective of a fan, the easiest way for Tottenham Hotspur is to bring in a large number of stars and pile them up to form two strong squads, one to play in the league and the other to play in the cup, and the final result is a Grand Slam.

But there is a problem that in less than a year, your team will be in debt due to the poor financial situation, and eventually it will unfortunately be punished by the Premier League or even UEFA, because it is a bottomless pit, even if Abramovich just supports Shevchenko and Ballack, the two stars will not be able to bear it, how much do you have to raise two sets of powerful stars? How much money do you have to lose each year to raise these stars? How much tax do I have to pay?

Ye Qiu knew that his left side was a weakness, and after leaving Vargas, Marcelo was always strong in attack and weak in defense, but Ye Qiu always believed in Marcelo, and the left side introduced was also a semi-finished product of the type of Coentrão, not similar to Rahm , Ashley O Cole and other powerful stars, for what?

Or the cost

First of all, how much do you have to spend to bring in these players? How high is the salary? How much tax do I pay?

After doing the math, Ye Qiu preliminarily estimated that a contract period of four years would require at least 70 million euros of investment.

If there is competition, then sorry, you can hardly consider the so-called cost and cost performance, but keep throwing money, and you have to think about the style adaptation after the introduction.

And if you don't take into account the introduction of stars like Lahm and Ashley Cole, who have proven their quality, what is the difference between bringing in other players and reusing Marcelo? And Ye Qiu has always believed that it is far more cost-effective to help players improve their shortcomings and pay and gain than to strengthen a certain position directly through recruitment.

Of course, it depends on whether you are a player who deserves it.

In other words, good or bad defense, in addition to the players, the support of the entire tactical system and the strength of the opponent are also crucial.

Just like Ye Qiu was in Real Madrid in his previous life, the same Marcelo, Mourinho's defense was a lot more stable, but under other managers, Marcelo's defense was very bad, is it just the player's progress? Isn't there any tactical backing from Mourinho?

One-on-one, anyone defending superstars like Messi, Robben, Cristiano Ronaldo and Ribery, you can pick and choose from the whole world, no one can guarantee that they can hold it, not even more, as long as he achieves a 50% success rate, no defender can guarantee it

So for Ye Qiu, he can sell Van Persie, sell Gareth Bale, or even sell Messi, but he doesn't think about selling Alves, nor does he consider selling Marcelo, and even he gives Alves a first-grade salary, and gives Marcelo a pretty good salary, just to keep them.

Because in Ye Qiu's plan, creating a pair of strong left and right wings with both offense and defense is very important for Tottenham Hotspur, and in his opinion, Alves on the right and Marcelo on the left are undoubtedly the most suitable and low-cost and most fruitful choices now.

Kyle Walker, along with another England youngster currently in the youth team, Luke Walker, has been the focus of development, especially Kyle Walker, who has already entered the first team, and he has been specially coached in almost every training session.

In Ye Qiu's view, the biggest difference between Kyle Walker and Alves, in addition to defense, is in the choice of insertion timing, the former belongs to hard power, and the coaching staff can help him improve and give professional guidance, but the latter belongs to soft power, which requires Kyle Walker to open his mind and understand the reason.

It's like in the second leg of the Champions League semi-final between Tottenham Hotspur and Manchester United, Alves started and was under the threat of Manchester United throughout the game, as well as the suppression of Wayne Rooney on the right side of the front trident, and he did little in the opening half an hour except for defense, and did nothing in attack.

Does it mean that Alves wilted like this?

Wrong, it's not because he doesn't have enough ability, but because he knows that now the team is dealing with Manchester United's attacking and pressing up front, and he can't leave his position, because as soon as he leaves, he will definitely be used by Manchester United, and the risk is too great.

But as long as there is an opportunity, he will not hesitate to press it.

As if it happened in the 37th minute, Yaya O Toure broke the ball after defending Sneijder in the middle, protected the ball and passed it back to Thiago Silva, Rooney and Benzema pounced on Thiago Silva for the first time, but the Brazilian quickly passed the ball diagonally to Alves.

There was no one at least 60 metres ahead, so Alves rushed forward quickly, took the ball and strode forward, crossed the halfway line, he still didn't slow down in the slightest, still sprinted forward along the right side, and rushed directly into the 30-metre area of Manchester United, forming a quick counterattack.

Tottenham Hotspur's front three were also very fast, with Edinson Cavani in front of him to disturb the United defence, Ribery on the left and Messi cutting inside to create space for Alves' back cut.

The Brazilian's sprint speed was too fast, and Evra didn't dare to step forward at all, because he himself was an attacking full-back, and he knew very well that as long as he stepped forward and got close, Alves could easily pass him by himself, so he chose to block the inside line to prevent Alves from cutting inside and letting the Brazilian cross.

It was the best choice he could have made, and as for what happened after Alves' cross, he had to trust his team-mates.

Alves rushed to a position parallel to the line of the penalty area and spotted a chance to direct a big foot cross.

I have to say that Alves' defensive ability is very good, and his offensive ability and technical ability are even better at right wing-back, but he also has his own weaknesses and shortcomings, such as his crosses, especially those with high-speed movements, are very bad, but the stopped crosses are handled very well.

Alves's kick was originally going to find Ribery at the left post, but it turned out to be too much, directly to the left side of the penalty area, fortunately just now when sprinting, Marcelo also rushed up, seeing Gary O Neville was pulled into the penalty area by Ribery, Marcelo himself rushed forward quickly and got the ball on the left side of the penalty area.

"The ball is still controlled at the feet of Tottenham Hotspur, Marcelo takes the ball, Gary O Neville goes over to mark it for the first time"

"Passing back, Ribery pulled out of the big penalty area, the ball came to his feet, Lasso Diarra defended him in the box, Ribery protected the ball and went sideways to the middle of the penalty area, but Carrick also came to participate in the defense, to form a bag"

"Beautiful, Ribery suddenly accelerated, rushed out of the space, broke the bag of Las Diarra and Carrick, crossed to the edge of the penalty area and the top of the arc to the right, to the unmarked Messi"

"Messi receives the ball, gets straight to the foot, curling the ball from outside the penalty area"

saw Messi pick up his left foot and shoot directly into a volley, the hearts of all Manchester United fans on the scene were pinched, and Messi calmly played this shot in the case of no defense, taking the upper right corner, which is also Van der Sar's saving corner, and he feels that he is quite good.

The ball flew out from Messi's feet, crossed an arc, fell quickly, heard a bang, hit the upper right corner of the goal, the ball quickly rebounded to the left, and quickly fell to the ground, when it landed, it just bounced a little bit inside the goal line, and then rebounded.

But at this moment, Ferdinand suddenly rushed up quickly from behind, faced the ball directly with a big kick, and kicked the ball out of the goal, and the scene resounded with an extremely enthusiastic cheer.

Tottenham Hotspur's players were about to celebrate the goal, especially Lionel Messi and Franck Franck Ribery, who were already hugging each other, but soon everyone noticed that the referee had not blew the whistle.

"Hey, Mr. Rossetti, it's a goal" Cavani, who was closest to him, shouted to Italian referee Roberto Rossetti, who wondered if he had forgotten to blow the whistle.

Gradually, the Tottenham Hotspur players also realized the problem, and one by one they ran to Roberto Rossetti, and the dignified hospital director looked at the linesman, consulting the linesman's opinion, or he himself did not have enough confidence and certainty about what happened just now.

Indeed, after the ball hit the corner, it quickly landed and rebounded, and the whole process was indeed very fast, and Tottenham Hotspur quickly moved from the right to the left, and then from the left to the middle, and Messi completed the long shot from the outside of the penalty area, and he was a little out of rhythm, so now I have to ask the linesman for advice.

"We're sorry, we all thought the ball didn't hit the line," Roberto Rossetti said with regret.

The Tottenham Hotspur players were very dissatisfied, chasing the Italian referee, and the Manchester United players immediately rushed up, one by one roaring at the Tottenham Hotspur players, and the Red Devils fans in the stands also booed the Tottenham Hotspur players, thinking that the players of this team were obviously putting pressure on the referee.

"Judging from the slow-motion replay, the ball did enter the goal line when it landed" In the slow-motion playback process, the director even froze the moment the ball touched the ground, and everyone could see that the ball did fall into the goal line, but if you look at it from a distance, it is really difficult to grasp.

"The referee's decision this time is indeed a misjudgment, and a goal from Tottenham Hotspur was blown away, which is indeed a pity" The on-site commentator also felt very helpless about this situation, and the replay would not be considered by the referee.

Goalkeeper Edwin van der Sar and vice-captain Rio Ferdinand were not involved in the verbal clash between United and Tottenham Hotspur players because they are both insiders, especially Ferdinand, but in this situation, they are unlikely to come forward and say anything.

The game was eventually coordinated by the referee and the two sides returned to the pitch, with Tottenham Hotspur's goal disallowed and the score still at 00, which caused the United fans in the stands to cheer like victors.

To know that Tottenham Hotspur scored first, it was almost to force Manchester United to fight hard, and it would put the Red Devils in a rather disadvantageous position, so this goal almost saved Manchester United, but it hit Tottenham Hotspur's morale hard.

It was not easy to play Manchester United, and it was already quite difficult to break through Van der Sar's goal in front of Ferdinand and Vidic, but now it was hard to have a goal, but it was blown away, which was a blow to morale and fighting spirit.