Sub-13, Sub-15, Sub-17 and Sub-20 Categories: What They Mean and How They Work

If your son plays football or you're a scout looking for talent, the Sub (under-age) categories are the system that organizes youth competition throughout Latin America. But the name only tells you the maximum age: there's much more behind each category that matters to understand what to expect, how a player develops, and where the real opportunities for progression are.

Why age-based categories exist

Age divisions aren't just administrative. They respond to real biological, psychological, and technical changes. A 13-year-old player doesn't have the same aerobic capacity, reaction speed, or tactical understanding as a 17-year-old. Categories create spaces where players compete against rivals at their same development level.

In Latin America, the category system is quite homogeneous: Sub-13, Sub-15, Sub-17, and Sub-20 are the standard in most countries, although some adjust the names (U-13, under 13, etc.). Internationally, federations use these same ranges for tournaments and call-ups.

Sub-13: first competitive steps

Sub-13 is the entry category to structured competition. It groups players under 13 years old at the time of registration (some systems accept up to 12 years of age). This is where many players transition from friendly training to tournaments with official rules.

At this stage, the focus remains formative. Most clubs still don't specialize positions rigidly, and playing time is distributed so all players get minutes. Rules can vary: some tournaments reduce field size or match duration compared to older categories.

For parents: if your son is in Sub-13, keep in mind it's early to obsess over individual performance or contracts. These are years to solidify basic technique, discipline, and love for the sport. Scouts rarely monitor this category in depth.

Sub-15: where real selection begins

Sub-15 marks a turning point. Under 15 years old, but with significant changes from Sub-13.

First, physical level changes a lot. At 14 years old, many players have already passed or are at the peak of their pubertal growth spurt, gain muscle mass rapidly, and the speed and intensity of play increase noticeably. Training becomes more demanding.

Second, tactical focus grows. Teams begin to work with clearer game systems, and players are expected to understand their roles within a scheme. Positions start to specialize.

Third, competition filters. While in Sub-13 many clubs might have just one team, at Sub-15 some begin to divide into A and B teams. This means access to resources, higher-quality training, and playing time depends on which level you're categorized in.

International scouts start watching Sub-15, especially in the second half of the year, when players approach Sub-17. This is a good time for the player to appear on platforms like Smidrat, where clubs and scouts can review profiles of young athletes.

Sub-17: the category of professional leap

Sub-17 is where football stops being just a formative sport and becomes a competitive one. Under 17 years old, but many federations already have agreements for players in this category to train or occasionally play with professional teams.

The change is abrupt. Physical level is almost that of an adult (though not completely). Tactical and technical intensity resembles professional football much more. High-level Sub-17 tournaments (selective, national championships) are where the profiles that later reach professional level are forged.

By this point, pressure begins. Players notice their teammates start disappearing from the circuit (some due to injuries, others because they don't make the level). Those who remain receive more evaluation, more contact from scouts and managers, more responsibility on the team.

Technically, this is the category where finishing flaws are punished most. A player who in Sub-15 could lack passing precision because they had other qualities, in Sub-17 isn't tolerated. Positional specialization is clear: there are wingers, defensive midfielders, strikers.

Many large Latin American clubs begin professionalization processes at Sub-17: formation contracts, controlled diets, sports psychologists, video analysis. It's not mandatory everywhere, but in competitive clubs it's the norm.

Sub-20: last step before professional

Sub-20 groups players under 20 years old. It's the category closest to professional adult football, and in many cases, players are already de facto professional (with club contract, salary, etc.).

Competition in Sub-20 is where it's decided who reaches first division and who doesn't. The technical, physical, and mental differences between the best and worst player on a Sub-20 team can be enormous compared with younger categories. Some are almost established professionals; others are barely 17 and training with older players for the first time.

Internationally, Sub-20 is important for national team selection filters. Many countries call up Sub-20 teams for CONMEBOL tournaments or other competitions, and those tournaments are watched by European clubs looking for talent to export.

For a player in Sub-20, focus should be on two things: accumulating minutes in high competition (either at their club or on loan to a lower-category professional team) and consolidating their profile. Are they a center back, fullback, attacking midfielder? Do they have potential for first division or is it more realistic to think about second division? These questions are answered in Sub-20.

How transitions between categories work

A player can change categories in two ways: by age (when they reach the age limit of the next category) or by level jump (when the club promotes them because they're ready early).

Early level jumps are rare and generally only occur at large clubs with enough squad depth. A 14-year-old can jump to Sub-17 if they demonstrate the level, but it's exceptional.

Most commonly, players advance as they get older: at 13 they enter Sub-15 (or continue in Sub-13 that calendar year if they have a birthday mid-season), and so on. Systems vary by country and federation, but the logic is similar.

On platforms like Smidrat, when a player transitions categories, it's useful to update their profile. Scouts review not only current performance, but also how they performed when they moved up in level. Some players shine in Sub-15 but fade in Sub-17 due to the physical gap.

Differences in rules and format by category

Although the system is similar throughout Latin America, there are minor variations by country and federation.

Sub-13 may have matches of 2x35 minutes instead of 2x45. Field size is sometimes reduced. In some leagues, all players must have guaranteed playing time (mandatory rotation).

Sub-15 onwards is usually 2x45 minutes in the standard professional format, although actual playing time can vary according to local rules (more hydration breaks, for example).

The offside rule exists in all categories, although in Sub-13 some local tournaments are flexible with it (offside only in zones near the goal). From Sub-15 onwards, it's FIFA regulation offside.

What's important is that you verify with your federation or club what the specific rules are where your son plays. Don't assume that because it's Sub-15 at one club it's identical at another.

What to expect from each category as a parent or player

Sub-13: It's fun and learning. If your son takes training seriously, that's good. If he wants to play another sport too, that's fine. The goal is for him to develop a love of football and technical foundation.

Sub-15: Decisions start here. If the player wants to progress, they need consistency: regular training, good nutrition, rest. Injuries become more frequent due to growth impact, so taking care of the body is important.

Sub-17: Bigger decisions. Professionalize at the club? Go to another club? Look for opportunities abroad? Players and parents must be realistic. Consult with coaches, scouts, experienced people. This is the stage where having an updated profile on Smidrat or another scouting platform can open doors.

Sub-20: It's professional, even if it's development level. Decisions here affect career. Playing time, type of club, geographical location, contract: everything counts. A good Sub-20 can jump to first division, but can also stagnate.

Summary: categories vs. real age

One final important point: the category isn't exactly the player's age. It's the maximum age they can be on December 31st of the competition year.

This means that on a Sub-17 team, the age range can be 15, 16, or 17 years old. There's an enormous difference between a big 15-year-old in Sub-17 and a small 17-year-old. Scouts know this and consider it. If your son is young for his category (late birth in the year), be patient: there can be a significant jump when he reaches the next category.

Frequently Asked Questions