Build Your Own Exercise Database: How Sketch Becomes Your Academy's Knowledge Archive

Introduction: Knowledge Resides in Minds – and Gets Lost

Every football academy possesses knowledge. A lot of it. Coaches who have worked with specific age groups for years have an exercise repertoire that has grown over decades. Game forms that work with that group. Pressing drills that have proven effective. Finishing variations that ignite enthusiasm every time.

The problem: This knowledge is held in minds, on scraps of paper, in PowerPoint files on personal laptops, or – at best – in an unstructured Google Drive folder that no one can find.

When a coach leaves, their knowledge leaves with them. When a new assistant coach joins, they receive, at best, a verbal introduction. If the academy director wants to know what different age groups are working on, they check WhatsApp groups.

A professional exercise database solves this – not as a bureaucratic archive, but as a living, collaboratively used tool. A collection that grows with every training session, that every coach can use at any time, and that directly feeds into training planning.

Coach OS Sketch is built for this. This article explains how to set it up – and why connecting it to AI training planning makes all the difference.

Why a Club-Owned Exercise Database is Indispensable

Argument 1: Knowledge Belongs to the Club, Not the Coach

This is the most fundamental realization. If a coach develops a brilliant pressing game form, that exercise – without documentation – is their personal property. As soon as they leave, it's gone.

With a structured club database, the exercise becomes institutionalized knowledge. It remains when coaches come and go. It improves as other coaches adapt it and add variations. It becomes more valuable year after year.

Argument 2: Uniformity Arises Through Shared Tools

A training philosophy remains theoretical as long as there are no shared exercises to implement it. If the club defines possession and pressing as core playing principles, it needs a library of exercises that train exactly that – available to every coach, in every age group, at every difficulty level.

A club-owned exercise database is the practical implementation of the club's philosophy.

Argument 3: New Coaches Don't Start from Scratch

Coach turnover is one of the most costly moments in club life. The new coach doesn't know the group. They don't know the players. And they don't know the exercises the group has worked on before.

If they can open the club database and see: Here are the pressing drills used in this age group. Here are the fundamental technical exercises favored by the predecessor. Here is the game form that always went down well with this group – then their start is entirely different.

Argument 4: Collective Intelligence Outperforms Individual Knowledge

No single coach has the best exercises for all situations. But ten coaches together – with ten different experience backgrounds, ten different age groups, ten different focuses – have a reservoir that no one could build alone.

A shared database makes collective intelligence accessible.

Sketch: The Right Tool for Exercise Documentation

Before we dive into the setup process, let's briefly address the tool question. Why Sketch – and not PowerPoint, Word, or a shared Google Drive folder with photos?

Football-Specific Tools Instead of Rectangular Workarounds:

Sketch is not a generic drawing tool. It features player figures, cones, pylons, goals, markers, and balls. Running paths are drawn as running arrows, passing paths as passing arrows, dribbles as dribbling arrows – visually distinguishable at a glance. The result looks like a professional exercise diagram, not an improvised slide.

Animation Instead of Still Images:

A complex exercise with two phases is difficult to explain with a still image. Sketch allows frames to be created – and the tool automatically morphs between them. Players see the movement. Assistant coaches understand the sequence immediately.

Labelling and Context:

Every Sketch exercise receives a title, a procedural description, coaching points, and tags. Not as an optional extra – but as an integral part. The AI in Coach OS (Coach AI) automatically suggests titles, procedures, and coaching points as soon as the drawing is complete. One click – adopted.

Direct Connection to Training Planning:

This is the crucial difference from any other documentation tool: What is drawn in Sketch is directly available in the training generator. Not as an export, not as an attachment – but as a fully-fledged exercise within the planning interface, equivalent to the over 1,244 exercises from the Coach OS standard database.

Building It: Step-by-Step to Your Club's Own Database

Step 1: Define Structure Before Drawing

The most common mistake when building an exercise database: starting to draw without a clear structure. The result: 50 exercises in the library, no meaningful categorization, nobody can find what they're looking for.

Before the first drawing, the tag structure should be in place. Good categories for a football exercise database:

Thematic Tags (Focus):

• Pressing / Counter-pressing
• Build-up / Possession
• Transitions (Offense → Defense / Defense → Offense)
• Finishing / Goal Scoring
• Technique (Passing / Dribbling / Ball Control)
• Duels
• Set Pieces (Corner Kicks, Free Kicks)
• Coordination / Athleticism

Structural Tags (Format):

• Rondo
• Game Form (e.g., 4-on-4)
• Station Training
• Group Exercise
• Full Field
• Small-Sided Game

Age Group Tags:

• Bambini/U8
• U10
• U12
• U14
• U16
• U18/Seniors
• All Age Groups

Difficulty Tags:

• Beginner
• Intermediate
• Complex

This structure doesn't have to be perfect – it can evolve. But a basic structure from the start saves a lot of effort later.

Step 2: Inventory – What Already Exists?

Every academy has exercises. But they're scattered everywhere. Before a systematic new build, a quick inventory is worthwhile:

• Which coaches have exercise collections on personal devices?
• Are there already shared folders with exercise diagrams?
• Which exercises are used in almost every training session? (Document these first)

The goal of the inventory is not a complete cataloguing – that would take months. It's about quickly getting the club's 20–30 core exercises into the database so that a basic foundation is immediately available.

Step 3: Create the First Drawings

With the tag structure and prioritized exercises, it's time for the first Sketch session. Recommendation: Do it together as a coaching team, not alone.

Format for the First Session (90 Minutes):

• 0–15 Min: Brief introduction to Sketch for all coaches (for those unfamiliar)
• 15–75 Min: Each coach draws 2–3 core exercises for their team
• 75–90 Min: Mutual presentation, assigning tags, populating the library

After 90 minutes: 15–20 exercises in the club library. A start that's immediately usable.

Tip for AI Usage in this Session:

If unsure how to draw an exercise, use the text-to-drawing function in Sketch. Simply describe the exercise – "Four versus two on a small field, one neutral player outside, overload on the right side, finish after combination" – and Coach AI generates a first draft. Coaches refine, assign tags, save. This takes less than five minutes per exercise.

Step 4: The Library Grows in Everyday Use

After the initial setup session, the database continues to grow in daily use. No extra task – just the habit: If a coach plans an exercise they haven't drawn yet, they draw it. If a game form works particularly well, it gets added to the library.

Over the course of a season, an actively used club library can grow to 100–200 exercises. This is a reservoir that no single external database can replace – because it reflects the specific preferences, experiences, and focuses of your own club.

Step 5: Quality Assurance and Maintenance

A database that isn't maintained loses its quality. Duplicates arise, tags become inconsistent, outdated exercises block searches.

Once per season, someone (academy director or a designated coach) should review the library:

• Merge or delete duplicates
• Standardize tags where they diverge
• Archive outdated or rarely used exercises
• Create new categories if the need arises

This takes two to three hours per season – and keeps the database clean and usable.

AI Functions in Detail: How Coach AI Accelerates Database Creation

Coach AI is the AI component within Sketch. It has three core functions particularly relevant for database construction.

Function 1: Text → Drawing

How it works: The coach describes the exercise in natural language. Coach AI understands player numbers, field size, positions, movement sequences, and phases. It generates a draft that the coach can refine.

Typical Prompt: "Six versus three on a 20-by-20-meter field. The six attackers maintain possession, the three defenders try to win it back. Immediate counter-pressing attempt upon winning the ball. After three successful passes, the attackers can switch."

Result: Coach AI places six player figures in attacking positions, three defenders, shows typical ball circulation paths, and marks pressing zones. The coach can then move individual figures, add arrows, and save.

Time Savings: Instead of 20–30 minutes of manual drawing: 3–5 minutes to enter the prompt, refine the draft, save.

Function 2: Image → Drawing

How it works: The coach photographs an exercise diagram from a coaching manual, takes a screenshot from an analysis video, or scans a hand-drawn sketch. Coach AI recognizes player positions, running paths, field size, and objects – and creates an editable Sketch drawing.

Particularly useful for: Clubs that rely on external sources (DFB coaching manuals, UEFA materials, scouting videos) and want to integrate this content into their own library.

Important: The resulting drawing is fully editable. It is not a screenshot or an import – it is a native Sketch drawing with all editing possibilities.

Function 3: AI Labelling

How it works: As soon as a drawing is complete (whether drawn manually, or created via text or image AI), Coach AI automatically suggests:

• Title: Precise, descriptive name of the exercise
• Procedure: Step-by-step description of the training process
• Coaching Points: Tips for coaches on what to pay attention to during the exercise
• Keywords / Tags: Thematic categorization

Coaches review the suggestions, adjust where necessary, and confirm. One click – all fields filled.

Why this is crucial for database creation: The barrier to documenting exercises dramatically decreases. No more empty text fields to fill. No more agonizing over the correct description. Simply draw – AI suggests the rest.

The Connection to Training Planning: Why the System Belongs Together

Building your own exercise database would be valuable even without AI training planning. But it's the connection between Sketch and the Coach OS Training Generator that truly makes the system powerful.

How the Integration Works in Practice

When a coach creates a new session in the Coach OS Training Generator, the system accesses two sources:

Source 1: The Coach OS standard database with over 1,244 curated, scientifically validated exercises.

Source 2: The club's own Sketch library – all exercises that the club's coaches have drawn and saved.

Both sources are equally valued. A self-drawn pressing exercise from the club library stands equally alongside a standard pressing exercise from the Coach OS database. The training generator selects from both – depending on the set parameters (age group, focus, player number, equipment).

The Result: Training Sessions That Match Your Club

A training generator that only uses external exercises produces generic training sessions. A training generator that also accesses the club's own library produces training sessions that match the club's philosophy, utilize exercises already familiar to that group, and consider the team's specific strengths and weaknesses.

That is the difference between a generic solution and a club-specific platform.

Practical Example

A U14 coach wants to plan a session with a focus on pressing. They open the training generator, set player number (14), field size (half-field), focus (pressing / tactical), duration (75 minutes), and training model (numerical superiority game).

The generator suggests:

• Warm-up: Coordination exercise from the Coach OS standard database (suitable for U14)
• Technical Part: Passing exercise from the club library (drawn by the U14 coach last month)
• Focus Game Form: Pressing game form from the club library (developed by the U15 coach and now adapted for U14)
• Cool-down: Free play with pressing triggers – from Coach OS standard database

The result is a 75-minute training session that fits the club, reflects its philosophical focuses, and was nevertheless generated in under a minute.

Common Mistakes When Building an Exercise Database

Mistake 1: Trying to Document All Exercises at Once

Ambitious starting phase: All 200 exercises the club has ever used are to be in the database within a week. This leads to overwhelm, quality issues (hasty drawing without labelling), and giving up after two weeks.

Better: Start with the 20–30 most used core exercises. Let it grow organically in daily use.

Mistake 2: Saving Drawings Without Tags

An exercise without tags is undiscoverable in the library. As the library grows, an untagged exercise is practically invisible.

Better: Use Coach AI for automatic tag suggestions. For every exercise, tag at least the focus, format, and age group.

Mistake 3: The Library is Only for Training Planning, Not for Communication

Sketch drawings can be sent directly to players or assistant coaches. Not utilizing this misses out on half the added value.

Better: Show exercises on a tablet before training. Play animations. Players understand the sequence visually – not just verbally.

Mistake 4: Ignoring Quality Control

If every coach draws as they please, inconsistent representations arise. Different arrow types for the same movement, different conventions for player positions.

Better: Define brief club-internal Sketch conventions: Which arrow type for running, which for passing, which for dribbling? Which color coding for attackers vs. defenders? One page of conventions saves a lot of confusion.

Mistake 5: Not Connecting the Library to the Community

Coach OS has a community library – Sketches from other coaches that have been publicly shared. Clubs that ignore this source miss out on valuable ideas.

Better: Regularly review community Sketches, adopt interesting exercises into your own library, adapting them if necessary.

Who is Responsible? Roles in Database Construction

The Sketch Coordinator

In larger academies, it's worthwhile to appoint a coach as the responsible person for the exercise database. Not as a full-time job – but as a clear area of responsibility. This coach:

• Maintains consistent tag structure
• Performs seasonal maintenance
• Recommends new exercises that should be added to the library
• Is the point of contact for Sketch-related questions

All Coaches as Contributors

The database thrives on everyone contributing. If only two out of twelve coaches draw exercises, the library isn't collective – it's the work of two individuals.

Motivation arises through visibility: When a coach sees their exercise in the library and experiences a colleague using it in the next training session, intrinsic motivation is created.

The Academy Director as User

The academy director doesn't necessarily draw themselves – but they use the library for quality assurance. What focuses dominate? What's missing? Does the library align with the club's philosophy?

From Club Database to Club Identity

The ultimate goal is greater than a collection of exercise drawings. A well-built, consistently maintained club database becomes the playing style identity of the club.

Anyone looking from the outside – a new coach, a potential player, a sporting director evaluating a club – who sees a club's Sketch library, immediately understands: How does this club think about football? What are its focuses? What tactical ideas shape its youth development work?

This is more than documentation. This is identity.

And this identity remains – regardless of who the current coach is.

Summary: What You Need to Get Started

1. Coach OS Sketch – the drawing tool, already included in Coach OS

2. 30 Minutes Preparation – define tag structure

3. 90 Minutes First Team Session – draw the first 15–20 core exercises

4. A Habit – every new exercise introduced in training is drawn and saved

That's all. No big project, no budget, no IT infrastructure. A habit and the right tool.

Test Coach OS for 30 days free. No credit card required. Get started immediately.

This article was written by Trax Sports GmbH, Hamburg.