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For forty years a club waits for a major trophy. In 2024 the moment finally comes: Athletic Bilbao wins the Copa del Rey, beating Mallorca 4–2 on penalties after a 1–1 draw. Every player on the field comes from the Basque Country or was trained there. No other top club in Spain imposes such a restriction on itself. An example of the Team Principle of Identity.
A Rule No One Wrote Down for a Long Time
Situation
Athletic Club is founded in Bilbao on July 18, 1898. In 1911 a dispute breaks out because the club had fielded ineligible English players in the cup. Since then Athletic has relied solely on local players. Today the rule reads: a player is eligible if he was born in the Basque Country – including Navarre and the French Basque Country – or came up through a youth program there. For a long time this was not written down anywhere. Only in 2008 does the club publish the criteria on its website. Its motto runs, roughly: with homegrown players and home support, there’s no need for imports.
Connection to the team principle
The Team Principle of Identity says: shared values turn “I” and “the others” into a “we.” At Athletic the case is not quite so simple, because the rule is tied to origin and training, not to convictions. It becomes a value because the club chooses to keep it: loyalty to its own, even when that costs something. The fact that the rule went almost a hundred years without being written down shows how deeply rooted it is. What everyone knows doesn’t need to be written down anywhere.
What the Restriction Costs – and What It Brings
Situation
Since the 1971–72 season, young players have been trained at the Lezama academy. The record: eight league titles, the last in 1982–83 and 1983–84, and 24 cup wins – only FC Barcelona has more. Along with Real Madrid and Barcelona, Athletic is the only club never to have been relegated from the top flight. On the other side of the ledger are two lost European finals, in 1977 against Juventus and in 2012 against Atlético Madrid, and four decades without a major trophy. Neighboring Real Sociedad had a similar rule from 1962 and abandoned it in 1989, when it signed the Irishman John Aldridge.
Connection to the team principle
A value creates identity when you give something up for it. Athletic forgoes almost the entire transfer market. In return, every youth player at Lezama knows that the first team is built from players like him, and every club member knows who is out there on the field. Whether the club is so stable because of the rule or in spite of it cannot be neatly untangled. What is certain is that its neighbor made a different choice, while Athletic is sticking with its own.
Who Belongs to the “We”?
Situation
Over time the rule has been interpreted more broadly. In 1996 Bixente Lizarazu becomes the first Basque from France to play for the club. In 2012 Aymeric Laporte sparks a debate: his Basque roots go back only to his great-grandparents’ generation, but he was trained in the Basque Country. In 2011 Jonás Ramalho, whose father is from Angola, makes his debut. That made Athletic the last club in Spain’s top division to field a Black player. In 2015 Iñaki Williams becomes the club’s first Black goalscorer, and in 2025, after more than 400 appearances, its captain. The rule is controversial: critics see it as discrimination, supporters as a youth-development philosophy.
Connection to the team principle
Every “we” has an edge. In 1979, in their social identity theory, Henri Tajfel and John C. Turner described how people derive part of their self-image from belonging to groups and favor their own group. In 2017 Samantha A. Conroy, Christine A. Henle, Lynn M. Shore and Samantha A. Stelman reviewed what very high identification with one’s own organization can cost: resistance to change, conflict, unethical behavior for the benefit of one’s own group. This is not a verdict on Athletic but a warning to every team with a strong identity. The club’s example brings the decisive question into focus: is the “we” defined by ancestry, or by what someone has learned here and helped sustain? Over the years Athletic has visibly moved in the second direction.
Same Rule, a Second Team
Situation
Athletic has had a women’s team since 2002. It plays by the same rule and has won five league titles.
Connection to the team principle
An identity is robust when it can be passed on. Here the same principle shapes a second team, founded decades later – and there, too, it proves compatible with success.
Key takeaways
Key Lessons
- Ask yourself what your team voluntarily does without. That is often where the core of its identity lies.
- Invest in developing your own people. Those who grow up in your team carry your values differently from someone brought in from outside.
- Clarify what makes someone belong in your team: origin and the right pedigree – or what they support and contribute.
- Keep an eye on the boundary of your “we.” The stronger the identity, the more important the question of whom it excludes and whether that is intended.
- Check regularly whether an old rule still serves the value it once stood for.
Summary
Athletic Bilbao defines itself through a self-imposed restriction that binds players, members and region together. With it, the club has stayed in the top flight for more than a hundred years, even if major trophies have become rare. The example shows the strength of the Team Principle of Identity and, at the same time, its flip side: a strong “we” draws boundaries, and a team has to decide again and again where they run.