Introduction: Knowledge lives in coaches' heads – and gets lost
Every football academy has knowledge. A lot of it. Coaches who have worked with specific age groups for years possess a repertoire of drills built up over decades. Small-sided games that click with a specific squad. Pressing drills that have proven their value. Finishing variations that spark enthusiasm every single time.
The problem: this knowledge stays in heads, on loose sheets of paper, in PowerPoint presentations on personal laptops or – at best – in a Google Drive folder nobody can navigate because it lacks structure.
When a coach leaves, their knowledge walks out the door with them. When an assistant coach joins, they receive a brief verbal handover at best. When the academy director wants to see what the different age groups are working on, they end up scrolling through WhatsApp groups.
A professional drill database solves this – not as a bureaucratic archive, but as a living, shared working tool. A collection that expands with every training session, available to every coach at any time, flowing directly into training planning.
Coach OS Sketch was built specifically for this. This article explains how the setup works – and why the link to AI training planning makes all the difference.
Why a club-owned drill database is indispensable
Argument 1: Knowledge belongs to the club, not the coach
This is the fundamental insight. When a coach develops a brilliant pressing game, that drill – without documentation – remains their personal property. As soon as they leave, it is gone.
With a structured club database, the drill becomes institutionalised knowledge. It stays when coaches come and go. It improves as other coaches adapt it and add variations. It gains value year after year.
Argument 2: Consistency comes from shared tools
A coaching philosophy remains pure theory without shared drills to implement it. If the club defines possession and pressing as core playing principles, it needs a library of drills that train precisely that – available to every coach, across every age group, at every difficulty level.
A club's own drill database is the practical execution of its football philosophy.
Argument 3: New coaches do not start from scratch
A change of coach is one of the most costly transitions in club life. The new coach does not know the squad. They do not know the players. And they do not know the drills the group has worked with so far.
When they can open the club database and see: here are the pressing drills used in this age group; here are the technical foundation drills favoured by their predecessor; here is the training game this squad always responded well to – their start looks completely different.
Argument 4: Collective intelligence beats individual knowledge
No single coach holds the best drills for every situation. But ten coaches working together – bringing ten different backgrounds, ten different age groups, ten different focal points – create a pool no individual could ever build alone.
A shared database unlocks collective intelligence.
Sketch: The right tool for drill documentation
Before diving into the setup process, let us address the question of tools. Why Sketch – and not PowerPoint, Word, or a shared Google Drive folder full of photos?
Football-specific tools instead of makeshift rectangles:
Sketch is not a generic drawing application. It features player figures, cones, hurdles, goals, markers, and balls. Runs are drawn as running arrows, passes as passing arrows, dribbles as dribbling arrows – visually distinct at a glance. The result looks like a professional drill graphic, not an improvised slide.
Animation instead of static images:
A complex drill with two phases is difficult to explain using a static image. In Sketch, you create keyframes – and the tool morphs between them automatically. Players see the movement. Assistant coaches understand the sequence immediately.
Labelling and context:
Every Sketch drill includes a title, sequence description, coaching points, and tags. Not as an optional add-on, but as an integral part. The AI in Coach OS (Coach AI) suggests titles, sequences, and coaching points automatically once the drawing is complete. One click – applied.
Direct link to training planning:
This is the crucial difference compared to any other documentation tool: whatever you draw in Sketch is instantly available in the session generator. Not as an export, not as an attachment – but as a fully integrated drill in your planning workspace, on equal footing with the more than 1,244 drills in the Coach OS standard database.
Setup: Step by step towards your club database
Define structure
Establish tags for focus, format, and age group.
Draw core drills
Start with 20–30 most-used drills – not everything at once.
Involve coaches
Shared standards – everyone documents in the same system.
Step 4: The library grows through daily practice
After the initial setup session, the database runs alongside daily training routines. It is not an extra chore, but simply a habit: whenever a coach plans a drill they have not drawn yet, they sketch it. When a training game works particularly well, it goes into the library.
Over the course of a season, an actively maintained club library grows to 100–200 drills. That is a resource no external database can replicate – because it reflects your club's specific preferences, experiences, and focal points.
Step 5: Quality assurance and maintenance
A database that is not maintained quickly degrades in quality. Duplicates appear, tags become inconsistent, and outdated drills clutter search results.
Once a season, someone (the academy director or a designated coach) should review the library:
- Merge or delete duplicates
- Standardise tags where they have diverged
- Archive outdated or rarely used drills
- Create new categories as emerging needs demand
This takes two to three hours per season – and keeps the database clean and usable.
AI features in detail: How Coach AI accelerates database creation
Coach AI is the artificial intelligence component within Sketch. It offers three core functions that are particularly valuable when building your database.
Feature 1: Text → Drawing
How it works: The coach describes the drill in natural language. Coach AI understands player numbers, pitch dimensions, positions, movement patterns, and phases. It generates a draft that the coach can refine.
Typical prompt: "Six v three in a 20 by 20 metre grid. The six attackers maintain possession while the three defenders try to win the ball. Upon turnover, immediate counter-pressing attempt. After three successful passes, attackers may switch positions."
Result: Coach AI places six player figures in attacking positions, three defenders, illustrates typical ball circulation paths, and marks pressing zones. The coach adjusts individual figures if needed, adds arrows, and saves.
Time saved: Instead of 20–30 minutes of manual drawing: 3–5 minutes to enter the prompt, refine the layout, and save.
Feature 2: Image → Drawing
How it works: The coach takes a photo of a drill diagram from a coaching manual, grabs a screenshot from an analysis video, or scans a hand-drawn sketch. Coach AI recognises player positions, running paths, pitch dimensions, and equipment – and generates an editable Sketch drill.
Particularly useful for: Clubs drawing on external sources (DFB coaching manuals, UEFA materials, scouting videos) wishing to integrate these drills into their internal library.
Important: The resulting graphic is completely editable. It is not a static screenshot or import – it is a native Sketch drill with full editing capabilities.
Feature 3: AI labelling
How it works: As soon as a drawing is ready (whether drawn manually or created via text or image AI), Coach AI automatically suggests:
- Title: A precise, descriptive name for the drill
- Sequence: Step-by-step instructions for running the drill
- Coaching points: Key coaching cues to focus on during execution
- Keywords / Tags: Categorisation by topic and focus
Coaches review the suggestions, adjust where necessary, and confirm. One click – every field is populated.
Why this is crucial for building a database: The barrier to documenting drills drops dramatically. No more staring at blank text boxes. No agonising over phrasing the description. Simply sketch – AI suggests the rest.
Connection to session planning: Why the system belongs together
Building a proprietary drill database would be valuable even without AI training planning. But it is the integration between Sketch and the Coach OS session generator that truly turns the system into a powerhouse.
How the integration works in practice
When a coach generates a new session in the Coach OS training generator, the platform draws on two sources:
Source 1: The Coach OS standard database containing over 1,244 curated, scientifically validated drills.
Source 2: Your club's own Sketch library – every drill coaches across the club have drawn and saved.
Both sources carry equal weight. A custom pressing drill from the club library ranks alongside a standard pressing drill from the Coach OS database. The session generator selects from both – tailored to the configured parameters (age group, focal point, squad size, equipment).
The result: Training sessions tailored to your club
A session generator drawing solely from external drills produces generic training. A generator that also accesses your club library produces sessions tailored to your club philosophy, incorporating drills familiar to your squad while addressing the specific strengths and developmental needs of the team.
That is the difference between an off-the-shelf solution and a club-specific platform.
Practical example
A U14 coach wants to plan a session focusing on pressing. They open the session generator and set the player count (14), pitch size (half pitch), focus (pressing / tactical), duration (75 minutes), and training structure (warm-up / main / final game).
The generator suggests:
- Warm-up: Coordination drill from the Coach OS standard database (suitable for U14)
- Technical phase: Passing drill from the club library (drawn by the U14 coach last month)
- Main game: Pressing game from the club library (developed by the U15 coach and adapted for U14)
- Final game: Free play with pressing triggers – from the Coach OS standard database
The result is a 75-minute session tailored to the club, reflecting its tactical philosophy, and yet generated at the touch of a button.
Common mistakes when building a drill database
Everything at once
200 drills in one week – leading to overwhelm and abandonment.
Missing tags
Untagged drills become invisible in the library.
Planning-only use
Failing to share Sketch templates with players or assistant coaches.
Lack of quality standards
Everyone draws differently – resulting in an inconsistent club library.
Who is responsible? Roles in database development
The Sketch coordinator
In larger academies, appointing a coach as the designated lead for the drill database pays off. Not as a full-time role – but as a clearly defined responsibility. This coach:
- Keeps the tag structure consistent
- Conducts seasonal maintenance
- Recommends new drills for inclusion in the library
- Acts as the point of contact for Sketch questions
All coaches as contributors
The database thrives on widespread participation. If only two out of twelve coaches draw drills, the library is not collective – it is the work of two individuals.
Motivation comes from visibility: when a coach spots their drill in the library and sees a colleague running it in the next session, intrinsic motivation flourishes.
The academy director as user
The academy director does not necessarily have to draw drills themselves – but they use the library for quality assurance. Which focal points dominate? What is missing? Does the library reflect the club's philosophy?
From club database to club identity
The ultimate goal extends beyond a mere collection of drill graphics. A well-constructed, consistently maintained club database becomes the embodiment of your club's playing identity.
Anyone looking in from the outside – an incoming coach, a prospective player, a sporting director evaluating the setup – who views a club's Sketch library immediately understands: How does this club see football? What are its core priorities? Which tactical principles shape player development?
That goes beyond documentation. That is identity.
And that identity endures – regardless of who is in the dugout.
Summary: What you need to get started
1. Coach OS Sketch – the drawing tool, already included in Coach OS
2. 30 minutes of preparation – define your tag structure
3. A 90-minute initial team session – draw the first 15–20 core drills
4. One simple habit – every new drill introduced in training is drawn and saved
That is all it takes. No massive project, no huge budget, no complex IT infrastructure. Just one habit and the right tool.
Try Coach OS 30 days free. No credit card required. Get started immediately.
This article was written by Trax Sports GmbH, Hamburg.
Frequently asked questions
Why does an academy need its own drill database?
Because knowledge should belong to the club, not individual coaches. A brilliant pressing game without documentation remains personal property: as soon as the coach departs, it is lost. In a structured database, it stays, gets adapted by colleagues, and becomes more valuable season after season.
Where are drills stored in most clubs today?
In coaches' heads, on scraps of paper, in PowerPoint presentations on personal laptops, or at best in a cloud folder nobody can navigate because it lacks proper structure.
How is a drill database linked to coaching philosophy?
A philosophy remains mere theory without shared drills to put it into practice. If you define possession and pressing as core principles, you need a library of drills designed to train those specific behaviours — accessible to every coach.
Isn't this just an archive?
No, the distinction is fundamental. An archive is where things are filed away; a drill database is actively used. It expands with every training session, is accessible to any coach at any moment, and feeds directly into session planning.
What happens during a change of coach without a database?
A new assistant coach receives a brief verbal briefing at best. And anyone wanting to know what different age groups are working on has to dig through WhatsApp groups.
Who at the club is responsible for setting it up?
Building the database requires clear roles. Without designated ownership, the database remains a well-intentioned project that everyone supports in theory but no one drives forward.
Questions about building your club's own drill database
How do you prevent coaches from keeping drills to themselves?
Establish clear rules and separate private drafts from approved formats. Coaches draw their ideas for themselves first. As soon as a drill works in training, technical staff review the format and release it for the whole club. Step by step, this builds a verified archive that reflects your club's identity.
How do you quickly digitize old drill cards or paper notes?
Take photos of paper sketches or type in bullet points of the sequence. AI handles the drawing, suggests coaching points, and converts the format into 2D or 3D views. This saves time transferring old notes into digital formats. With the Sketch drawing tool, you create animated drills directly from photos or text input.
How do you ensure the database aligns with your coaching philosophy?
Define fixed development modules for every age group and filter all drills by category, age, and difficulty. You set proportions for specific focus topics and see exactly which content appears in sessions. Through the club dashboard in Club OS, you manage permissions and guidelines centrally across all age groups.