All sports

Team & field sports

Association football

Club, school, national-team and community disciplines played across fields, courts and arenas.

8Reports
8Events
6Health briefs
3Research questions
10Guide chapters

Origins and evolution

How Association football took shape.

Many cultures played football-like games, but the modern association code was organised in England during the nineteenth century.

Founder or catalyst

There is no single inventor. The Football Association’s 1863 laws created a common code and separated association football from rugby-style handling games.

From early practice to modern sport

Clubs, rail travel and international competition carried the codified game worldwide. FIFA was founded in 1904 and the first men’s World Cup followed in 1930.

  1. The Football Association agrees a common set of laws.

  2. FIFA is founded by seven European associations.

  3. Uruguay hosts the first men’s FIFA World Cup.

Complete discipline guide

Understand Association football, not only the score.

One structured reference connects the playing rules with tournaments, officiating, athlete development, performance, health, facilities, equipment, governance, integrity and the culture around the discipline.

Sport family
Team & field sports
Guide depth
10 chapters · 43 topics
Competition model
Domestic leagues and cups connect to continental club events; national teams compete through regional championships, qualification and FIFA tournaments.
Officials
The referee leads the match with assistant referees and, where appointed, a fourth official, additional officials and video match officials operating under a defined protocol.
Facility focus
A rectangular natural or approved artificial surface is marked with touchlines, goal lines, penalty areas, centre and corner markings; goals, technical areas and safety run-off must satisfy the competition standard.
Content standard
Official rules and primary sources first
01

Rules and game format

How Association football is played and decided

Two teams of up to eleven players compete under the Laws of the Game. The goalkeeper has distinct handling privileges inside their own penalty area; substitutions and competition technology depend on the competition rules.
01

Playing format

Two teams of up to eleven players compete under the Laws of the Game. The goalkeeper has distinct handling privileges inside their own penalty area; substitutions and competition technology depend on the competition rules.

02

Scoring and result

A goal counts when the whole ball crosses the goal line between the posts and under the crossbar without an earlier offence. League and knockout competitions publish their own points and tie-breaking regulations.

03

Restarts, faults and penalties

The current Association football rulebook defines how play begins and resumes, which actions are illegal, how advantage may be applied and when warnings, penalties, disqualification or review are available.

04

Competition variations

Youth, masters, para, mixed, short-format and professional events can use authorised variations. The event regulations always take precedence for match length, entries, substitutions, tie-breaks and technology.

02

Tournaments and calendar

The Association football competition system

Domestic leagues and cups connect to continental club events; national teams compete through regional championships, qualification and FIFA tournaments.
01

Competition pyramid

Domestic leagues and cups connect to continental club events; national teams compete through regional championships, qualification and FIFA tournaments.

02

Tournament architecture

Events may use round robin, pools, brackets, heats, qualification standards, rankings, series points or aggregate classifications. Draw and seeding rules should be read with the event handbook.

03

Season and qualification

The Association football calendar connects entry deadlines, eligibility, ranking windows, qualification events and championship dates. iintroo links verified current events separately on this page.

04

Results and records

Official result books, federation databases and signed competition reports are the primary record. A result is not treated as a record until the governing body ratifies it where ratification is required.

03

Referees and officials

How Association football decisions are made

The referee leads the match with assistant referees and, where appointed, a fourth official, additional officials and video match officials operating under a defined protocol.
01

Match or contest officials

The referee leads the match with assistant referees and, where appointed, a fourth official, additional officials and video match officials operating under a defined protocol.

02

Decision protocol

Officials apply the written rule, signal the decision, record reportable incidents and use only the review technology authorised for that competition.

03

Education and appointment

National and international pathways normally combine rules examinations, practical assessment, fitness or technical standards, safeguarding education, monitored appointments and periodic reaccreditation.

04

Protests and discipline

Field-of-play judgment, rule misapplication, eligibility, conduct and appeals follow different procedures. Deadlines, deposits, evidence and the competent panel are defined by competition regulations.

04

Athletes and development

From first participation to elite Association football

Participation normally progresses through age-group or community programmes, club competition, regional selection, national pathways and senior elite squads.
01

Participation pathway

Participation normally progresses through age-group or community programmes, club competition, regional selection, national pathways and senior elite squads.

02

Technical and tactical learning

Coaching should define the core Association football skills, perception and decision demands, progressive practice design and objective feedback appropriate to age and experience.

03

Selection and ranking

Transparent criteria should explain eligibility, observation, trials, ranking or qualification, deselection, conflicts of interest and the route for questions or appeal.

04

Dual career and transitions

Education, work, financial planning, identity outside sport and support through injury, deselection, transfer and retirement are part of a complete athlete pathway.

05

Training and performance

What performance in Association football demands

Technical execution, tactical organisation, repeated high-intensity movement, communication and role-specific preparation are trained together.
01

Performance model

Technical execution, tactical organisation, repeated high-intensity movement, communication and role-specific preparation are trained together.

02

Training design

A season plan should connect competition demands with technical work, physical preparation, recovery, travel, monitoring and tapering rather than treating each area separately.

03

Testing and data

Tests are useful only when reliable, relevant to the athlete’s role and interpreted over time. Data collection needs consent, access controls, retention limits and a clear performance purpose.

04

Nutrition and recovery

Fuelling, hydration, sleep and recovery should match training load, environment, travel and the individual athlete. Supplements require contamination-risk assessment and qualified advice.

06

Health, medicine and safety

Association football health priorities

Contact and concussion exposure · Change-of-direction and lower-limb load · Congested schedules and recovery · Team culture and mental health
01

Contact and concussion exposure

Assess contact and concussion exposure in the real Association football training, competition, travel, equipment and recovery context.

02

Change-of-direction and lower-limb load

Assess change-of-direction and lower-limb load in the real Association football training, competition, travel, equipment and recovery context.

03

Congested schedules and recovery

Assess congested schedules and recovery in the real Association football training, competition, travel, equipment and recovery context.

04

Team culture and mental health

Assess team culture and mental health in the real Association football training, competition, travel, equipment and recovery context.

05

Emergency action

Every venue needs named medical leadership, communication, emergency equipment, ambulance access, referral pathways and rehearsed plans for the most serious sport-specific incidents.

06

Return to sport

Return should progress from clinical recovery through capacity, sport-specific training, full practice and competition, with shared decisions and documented criteria.

07

Mental health

Confidential care pathways should cover performance pressure, injury, sleep, eating concerns, harassment, transition and crisis response without making selection dependent on silence.

07

Facilities and event operations

A safe, competition-ready Association football venue

A rectangular natural or approved artificial surface is marked with touchlines, goal lines, penalty areas, centre and corner markings; goals, technical areas and safety run-off must satisfy the competition standard.
01

Field of play

A rectangular natural or approved artificial surface is marked with touchlines, goal lines, penalty areas, centre and corner markings; goals, technical areas and safety run-off must satisfy the competition standard.

02

Accessibility

Arrival, circulation, seating, changing, toilets, warm-up, competition access, communication and emergency evacuation should work for athletes, officials, workforce and spectators with disabilities.

03

Event operations

Accreditation, scheduling, results, workforce, athlete services, transport, security, media, cleaning, waste, safeguarding and contingency planning form one operating system.

04

Environment and sustainability

Heat, cold, air quality, altitude, water, surface condition, lighting and weather require monitoring and predefined modification or cancellation thresholds. Procurement and travel plans should reduce avoidable impact.

08

Equipment and technology

Association football equipment, fit and inspection

The ball, goals, footwear, shin guards, team colours and optional tracking or communication technology are regulated. Jewellery and unsafe equipment are not permitted in play.
01

Competition equipment

The ball, goals, footwear, shin guards, team colours and optional tracking or communication technology are regulated. Jewellery and unsafe equipment are not permitted in play.

02

Fit and maintenance

Correct size, setup, hygiene, inspection intervals, repair history and replacement criteria affect both performance and injury risk.

03

Measurement and replay

Timing, scoring, tracking, review and judging systems need calibration, operator training, failure procedures and a rule defining what the technology may decide.

04

Innovation approval

New materials, wearables, prostheses and performance technology must satisfy safety, fairness, data-protection and equipment-approval rules before competition use.

09

Federations, integrity and rights

Who governs Association football and how

International, continental and national bodies share responsibility with leagues, event owners, clubs, athlete representatives and independent integrity systems.
01

Governance map

The international body normally owns or recognises global technical rules; continental and national federations administer pathways and selections; leagues, clubs and organisers deliver competition under delegated regulations.

02

Anti-doping

The applicable anti-doping code, prohibited list, testing authority, whereabouts obligations, therapeutic-use exemptions, results management and appeal route should be checked for the athlete and event.

03

Safeguarding and ethics

Codes of conduct need independent reporting, protection against retaliation, trained responders, case-management boundaries and published sanctions or referral rules.

04

Competition integrity and rights

Betting-related corruption, manipulation, conflicts, eligibility, image rights, data rights, contracts and disciplinary procedures require clear jurisdiction and due process.

10

Records, culture and knowledge

Association football beyond the result

Archives, terminology, communities, media, participation and verified records explain how the discipline changes across countries and generations.
01

Records and milestones

Separate official records from best-known performances, era-specific marks and unratified claims. Record conditions, category, venue, date and source together.

02

People and institutions

Athletes, coaches, officials, clubs, schools, researchers, volunteers, organisers and federations all shape the sport’s history; biographies should distinguish verified fact from anecdote.

03

Terminology and tactics

A living Association football glossary should define official rule terms first, then clearly label coaching language, tactical shorthand and regional usage.

04

Media and participation

Broadcast access, photography, commentary, fan culture, community programmes, gender equity and geographic reach influence who sees and can enter the sport.

Working language

Essential Association football terms.

Offside
A position-and-involvement offence judged when a teammate plays or touches the ball.
Advantage
The referee allows play to continue when stopping it would benefit the offending team.
VAR
A video-review system limited to defined match-changing incident categories.
Technical rules
The sport-specific rules that define legal performance, equipment, scoring and official decisions.
Competition regulations
Event-specific provisions covering entries, format, qualification, scheduling, tie-breaks and discipline.
Technical delegate
An appointed official who checks that the event meets the governing body’s operational and technical standard.
Safeguarding
Policies and practices intended to prevent and respond to harassment, abuse, neglect and exploitation in sport.
Return to sport
A staged, criteria-based process for resuming training and competition after injury or illness.
Classification
In para sport, the process used to determine eligibility and group athletes for meaningful competition.

Source standard

Rules change. The official document wins.

This guide explains the system without replacing the current rulebook, competition regulations, medical advice or a federation decision. Dates, rule editions and eligibility must be checked at the point of use.

Explore the discipline

Association football, from every angle.

Move directly between reporting, competition dates, athlete health and evidence connected to Association football.

Health starting points

What changes in Association football?

01

Contact and concussion exposure

02

Change-of-direction and lower-limb load

03

Congested schedules and recovery

04

Team culture and mental health

These are general discussion points, not a diagnosis or a complete risk profile. Individual care belongs with appropriately qualified professionals.

Evidence-led health

Health questions connected to Association football.

Search health topics
Health article

Heel pain in young footballers: understanding Sever’s disease

Heel pain in young footballers needs assessment, a view of the whole activity week and gradual return. Explore Sever’s disease and uncertain treatment evidence.

American Academy of Orthopaedic Surgeons — Sever’s Disease; undated
Health article

Walking football: modified rules do not make the effort trivial

Walking football can support activity and social connection in older adults, but matches still include meaningful cardiovascular load, accelerations and injury risk.

UEFA Walking Football Toolkit · medical recommendations (2024)
Health article

Women’s football breast health: fit support to the player and the session

Breast pain, movement, chafing and contact injuries deserve routine attention. A well-fitted sports bra can improve comfort and support, but fit is individual and persistent pain, a new lump or nipple or skin change still needs clinical assessment.

UEFA Medical & Anti-Doping · Sports Bra Guide (2026)
Contact · speed · combat

Delayed symptoms still change the return-to-sport decision.

A normal-looking finish to a match or stage does not close a concussion assessment. Recognition, removal, serial review and graduated return must reflect the sport, the athlete and the available clinical resources.

Amsterdam 2022 concussion consensus · BJSM
Sleep · travel · recovery

Sleep planning is part of training design.

Competition times, late finishes, early travel, altitude and time-zone changes can all reduce sleep opportunity. Monitoring should begin with the athlete's normal pattern and lead to an individual plan rather than a single universal target.

Sleep and the athlete · BJSM expert consensus
Mental health · recognition · referral

Performance change can be a reason to ask, not to diagnose.

Mood, sleep, concentration, injury response and behaviour may change when an athlete is struggling, but coaches and teammates should not make a diagnosis. A clear confidential route to qualified mental-health care belongs in every performance system.

IOC consensus statement on mental health in elite athletes · BJSM

Competition calendar

Association football dates and events.

Search all events

Research and cases

Questions that need more than one perspective.

Search research

Connected profiles

Athletes, officials and organisations in Association football.

Search all profiles
Head coach

Emma Hayes

A football coach recognised for sustained club success, player-centred leadership and an Olympic title with the United States women’s national team.

England · United States
Coach · Former athlete

Pep Guardiola

A former midfielder and influential coach whose teams have been associated with positional play, control of space and sustained domestic success.

Spain
Referee · Refereeing leader

Pierluigi Collina

One of football’s best-known referees, later responsible for helping shape global referee preparation, technology and interpretation.

Italy
Officials

Abdulbaki Özküçük

2026–27 regional referee — Türkiye Football Federation (Gaziantep).

Türkiye
Officials

Abdulbaki Turan

Football assistant referee appointed to a documented 2026 TFF U19 match.

Türkiye
Officials

Abdulkadir Hasan Beyaztaş

2026–27 regional assistant referee — Türkiye Football Federation (Afyonkarahisar).

Türkiye
Officials

Abdulkerim Polat

2026–27 regional assistant referee — Türkiye Football Federation (Bursa).

Türkiye
Officials

Abdulkerim Saltuk Buğrahan Koca

2026–27 regional observer — Türkiye Football Federation (Kahramanmaraş).

Türkiye
Officials

Abdullah Akkurt

2026–27 regional assistant referee — Türkiye Football Federation (Şırnak).

Türkiye
Officials

Abdullah Bora Özkara

Turkish Football Federation — 2026 FIFA referee list identifies Abdullah Bora Özkara as a referee or video match official on Türkiye's FIFA-approved 2026 list.

Türkiye
Officials

Abdullah Buğra Taşkınsoy

Football official listed by TFF as a 2026–27 upper classification referee.

Türkiye
Officials

Abdullah Murat Tok

2026–27 regional referee — Türkiye Football Federation (İzmir).

Türkiye
Officials

Abdullah Su

2026–27 regional observer — Türkiye Football Federation (Trabzon).

Türkiye

Around the discipline

The people behind Association football.

Explore every role

Athletes

Youth, amateur, elite, masters, para and retired competitors.

Coaches

Technical, tactical, development and performance leadership.

Doctors

Team physicians, specialists and emergency-care professionals.

Physiotherapists

Rehabilitation, load management and return-to-sport teams.

Psychologists

Mental health, performance psychology and transition support.

Dietitians

Sport-specific fuelling, recovery and clinical nutrition.

S&C professionals

Strength, conditioning, testing and physical preparation.

Sport scientists

Biomechanics, physiology, analytics and research translation.

Lawyers & agents

Contracts, rights, safeguarding, disputes and representation.

Officials

Referees, judges, classifiers and technical delegates.

Administrators

Clubs, leagues, federations and public sport systems.

Organisers

Venues, event operations, volunteers and fan experience.

Safeguarding teams

Welfare officers, ethics leads and reporting pathways.

Media

Journalists, photographers, broadcasters and storytellers.

Researchers

Academics, educators, students and evidence reviewers.

Families & fans

The communities that make participation possible.