Despite only a few English players making it onto the top 100, the Premier League is the best represented with 27 players, followed by La Liga with 23.
The chart above shows the top five leagues by the number of footballers appearing in the list.
It is also used to refer to the geographical area that clubs recruit players from.
Of the 21 players in the squad, 14 were Basques, among them Pichichi, José María Belauste, Domingo Acedo and Félix Sesúmaga.
Throughout their history, Athletic Bilbao have continued to produce many notable players while adhering to their policy.
Lionel Messi has taken the top spot in the Guardian's list of the world's top 100 footballers published today.
See the full list and how it breaks down by nationality, club and position • Check out our top 100 footballers in the world for 2013 • Get the data • Explore the interactive of the top 100 • More data journalism and data visualisations from the Guardian The Guardian's choice of the world's top 100 footballers has been unveiled today with Lionel Messi topping the list at No1.
The choice of Messi at No1, beating Cristiano Ronaldo into second place, is explained below by Sid Lowe: There was only one name and one position on which all 11 members of the panel were in unanimous agreement; the world No1, Lionel Messi. The debate has moved to another plane: it is not so much a question of whether Messi is the best player in the world right now, as whether Messi might just be the best player there has ever been.
Four English players make it onto the list; Ashley Cole (30th), Wayne Rooney (31st), Joe Hart (65th) and John Terry (86).The average age for the footballers appearing on the list is 26 years old.Stephan El Shaarawy, aged 20, is the youngest player in the top 100 whilst Javier Zanetti is the oldest at 39 years old. 16 of the players are Spanish, 12 Brazilian and 10 German.But the Gunners would not be beaten and Bellerin punished Alonso's poor clearing header with a fine finish for a share of the points - though there was still time for Chelsea's Davide Zappacosta to hit the crossbar.Alvaro Morata had missed a glorious chance to give Chelsea a 14th-minute lead and the visitors were then indebted to a Thibaut Courtois save which pushed Alexis Sanchez's shot on to both posts.There are 8 Argentinian players on the list and both Italy and France have seven footballers on the top 100.