No team during current big-5 league season fielded club-trained players for a greater percentage of minutes than Athletic Club: 55.8%. The Basque side outranks local rivals Real Sociedad (43.9%), while Celta Vigo (41.2%) complete an all-Spanish podium. The Slovaks of MŠK Žilina (85.5%) top the table for clubs from 40 leagues worldwide.

Issue number 377 of the CIES Football Observatory Weekly Post relies on technical data produced by InStat to unveil the best performing outfield players in 32 European leagues. Footballers were classified into fifteen technical profiles and ranked according to their performance level with respect to both teammates and opponents, their playing time, as well as their team and league sporting strength.

Pioneers in the transfer economic valuation field, since 2010, the CIES Football Observatory has been developing a statistical method to assess market prices for professional football players. Issue number 376 of the Weekly Post presents the highest estimated transfer values for the 50 footballers who did not yet celebrate their 23rd birthday and made their big-5 league debut during current season.

Issue number 375 of the CIES Football Observatory Weekly Post presents the 100 best performing U21 outfield players from 32 European leagues according to a brand-new approach taking into consideration players’ performance compared to teammates, the employer team’s sporting level, as well as that of opponents.

Issue number 374 of the CIES Football Observatory Weekly Post ranks 60 leagues worldwide according to the percentage of minutes played since the 1st of January 2021 by footballers that did not yet celebrate their 21st birthday at matches played. The greatest figures were recorded in the Venezuelan (18.8%) and Danish top divisions (16.5%). The Saudi Pro League is at the opposite end (1.6%).

Issue number 373 of the CIES Football Observatory Weekly Post ranks 90 top divisions worldwide according to the average tenure duration of coaches (as per last 1st March). The values stretch from 1,536 days in Northern Ireland to only 156 days in Saudi Arabia.