Issue number 312 of the Weekly Post presents the exclusive CIES Football Observatory annual rankings of the clubs having trained the most players active in 31 top divisions of UEFA member associations. With 85 footballers trained, the Serbian side FK Partizan tops the table ahead of AFC Ajax (77) and Dinamo Zagreb (71). With respect to big-5 league players, the podium consists of Real Madrid (43), Barcelona (32) and Lyon (31).

In accordance with the UEFA definition, training clubs are those where players have been for at least three seasons between 15 and 21 years of age. For the first time, for each footballer, we also considered the number of domestic league matches played over the last year, the sporting level of clubs where they played them, as well as their age. This allowed us to calculate a weighted score reflecting the training work carried out by clubs also from a qualitative and temporal perspective.

Benfica, Ajax and Barcelona recorded the top weighted scores for the training of players in the 31 European top divisions, while Real Madrid, Barcelona and PSG are at the top of the weighted rankings with regard to footballers currently active in the five major European championships. The lists of players trained per team are available on demand.