With the five major European leagues ended, issue number 339 of the CIES Football Observatory Weekly Post presents the best line-ups for each championship. Players were selected according to the CIES performance index developed using data from OptaPro. Only footballers fielded for at least two thirds of domestic league minutes were included in the line-ups.

How frequently are teams fouling their opponents across Europe? Issue number 338 of the CIES Football Observatory Weekly Post answers this question using the data provided by InStat. At the level of the five major European leagues, the lowest foul frequency was measured for Arsenal (one foul every 10’44”), while Getafe is at the bottom end of the table (one foul every 5’44”).

Issue number 337 of the CIES Football Observatory Weekly Post reveals the employment rate of club-trained footballers (i.e. those having been for at least three seasons between the ages of 15 and 21 in their employer club) in teams from 27 top divisions of UEFA member associations. The highest percentage of minutes by club-trained players overall was recorded for the Slovakian side MŠK Žilina (61.5%), while RC Celta de Vigo (49.0%) has the greatest figure for big-5 league teams.

Issue number 336 of the CIES Football Observatory Weekly Post presents the index developed by the sports data company InStat to assess the performance of football players. This metric considers the technical gestures achieved by players, their playing time, as well as the level of the competitions in which matches were played. For footballers with more than 1,000 domestic league minutes this season, Lionel Messi (405) outranks Neymar Júnior (381) and Robert Lewandowski (371).

While player mobility has increased in recent years, squad stability remains a key success factor in football. Issue number 335 of the CIES Football Observatory Weekly Post highlights the footballers among current squad members having played the most domestic league matches during the last ten years for 540 teams from 35 top divisions worldwide. Sebastián Viera holds the record figure with 395 championship games for Junior de Barranquilla (Colombia).

The 334th edition of the Weekly Post presents the squad transfer value for the 98 teams in the five major European leagues. The estimated value for players loaned to other big-5 league teams was computed for the clubs of belonging, while that of players on loan outside of the top five European championships is not considered. The estimates were calculated through the CIES Football Observatory transfer value algorithm.