Issue number 333 of the CIES Football Observatory Weekly Post presents the percentage of domestic league minutes by footballers who had not yet turned 21 at the time of the matches played this season for 999 clubs from 71 top divisions that are currently running worldwide. The highest percentages were recorded for the Danish side FC Nordsjælland (48.9%) among the 30 major European competitions and the Singaporean team Young Lions (47.1%) for the clubs surveyed outside of Europe.

At big-5 league level, the highest figures were measured for Borussia Dortmund (28.5%), followed by three French Ligue 1 teams: OGC Nice (24.3%), AS Monaco (24.1%) and Stade Rennais (20.7%). The greatest proportion of minutes in the other major championships were registered for Wolverhampton (16.2%), FC Barcelona (15.0%) and Hellas Verona (11.7%). At the opposite end, eight teams did not field any U21 player, among which Tottenham and Inter.

The highest percentage overall was observed for FK Metta (88.0%), the team of the Riga’s University of Latvia. U21 footballers played a majority of minutes in two other Latvian top division teams: Valmiera FC and BFC Daugavpils. Ecuador’s club Independiente del Valle (34.3%) and Alger-based Paradou AC (27.8%) lead the table for America and Africa respectively. The average age on the pitch for clubs in the 31 main European leagues are available in the CIES Football Observatory Demographic Atlas.

Issue number 332 of the CIES Football Observatory Weekly Post compares 72 top division leagues worldwide from the perspective of the percentage of matches in which a team won by at least three goals. The lowest proportion of uneven fixtures was recorded in the Colombian Categoría Primera A: just 5 out of 126 (4.0%). At the opposite end of the table is the Solomon Islands top division: 41 uneven games out of 110 (37.3%).

For the UEFA member associations surveyed, the percentages vary between 8.8% in the Albanian Superliga and 31.2% for the Moldovian Divizia Na?ional?. More than one fifth of both the Austrian (23.5%) and German Bundesliga (20.9%) matches ended with at least a three-goal gap between opponent teams. These are much higher percentages than the average measured at the level of the 72 competitions included in the analysis (14.5%).

The Spanish Liga (11.4%) is the only league among the five major European ones where the proportion of uneven fixtures was so far lower than the global average. The contrary holds true for the French Ligue 1 (15.0%), the English Premier League (17.2%) and the Italian Serie A (17.7%). The Arabian Gulf League in the United Arab Emirates (22.2%) and the Stars League in Qatar (21.7%) stand also out as particularly uneven competitions.

The CIES Football Observatory has developed a unique methodology to compare the performance of players irrespective of their position. Issue number 331 of the Weekly Post highlights the outfield footballers with the highest score for domestic league matches played since the 1st of January 2021 for each of the 98 big-5 league clubs. Only players fielded for at least two thirds of minutes during this period are included in the rankings.

The greatest value overall was recorded for Lionel Messi: 92.5 out of 100! Eliminated from the Champions League, the Argentinean striker and FC Barcelona can now focus on the Liga. However, the departure of Luis Suárez will be a major obstacle to the title race. The Uruguayan has indeed the top performance score (84.3) at Atlético Madrid, while Toni Kroos (87.5) leads the table for Real Madrid ahead of Karim Benzema (85.3).

In the other four main European leagues, the highest CIES FO performance index values were registered for Robert Lewandowski in the Bundesliga (89.5), Cristiano Ronaldo in the Serie A (89.3), Guillermo Maripán (86.3) in the Ligue 1 and Jorginho Frello in the Premier League (89.4). In the latter competition, Chelsea’s midfielder outranks Rubén Dias (89.4), Wilfred Ndidi (85.2) and Luke Shaw (83.4). The technical profiles of all big-5 league players are available here.

The CIES Football Observatory has developed a powerful algorithm to assess the transfer value of professional football players on a scientific basis. Issue number 330 of the Weekly Post presents the top valued footballer for each of the 98 teams from the five major European leagues, as well as the percentage that the value of the most expensive player represents out of the total estimated transfer value of his owner club.

With an estimated transfer value of more than €150M, Marcus Rashford is the main asset of Manchester United. The Englishman represents almost 15% of the entire Manchester United’s estimated transfer value. This percentage rises above 20% concerning Erling Haaland and Borussia Dortmund, while it is about 10% for Phil Foden and Manchester City, and just below that proportion for Vinícius Júnior and Real Madrid.

The lowest dependance on the top valued player was recorded for an Italian Serie A team. With an estimated transfer value between €30 and €40M, Italian national A-team centre back Gianluca Mancini represents 8,7% of the total estimated AS Rome’s squad value. At the opposite end of the table is SD Eibar, where Edu Expósito (€15-20M) represents almost 40% of the total squad value. The estimated transfer value intervals for all big-5 league players are accessible for free here.

Major teams are built up over a period of years. The 63rd CIES Football Observatory Monthly Report presents an innovative approach to comparatively assess the sustainability of squads based on three elements: players’ age, the length of their stay in the employer club and the duration of their contracts. According to these criteria, Manchester United currently has the most sustainable squad among the 98 big-5 league clubs.

Manchester United fans can thus be confident in the ability of their team to qualify without too much difficulty for the group stage of the Champions League over the next seasons, and eventually lift again the Premier League trophy. Ranked just behind Manchester United despite having far fewer financial resources, the Basque clubs Real Sociedad and Athletic Club constitute perfect examples of sustainable squad management. Conversely, Genoa is a perfect example of short-term planning.

While football is not an exact science, data analysis can be an important tool with which to optimise performance. The sustainable squad management rating is not just a descriptive tool allowing the comparison of strategies pursued by teams in the past, which is interesting in itself, but also an instrument to steer future policies so as to increase the chances of success. For more information, please contact us.

Issue number 329 of the CIES Football Observatory Weekly Post highlights footballers having won the highest percentage of domestic league matches in which they participated as starting 11 players since the 15th March 2020. The sample covers 42 top divisions worldwide. It only includes footballers who started at least 20 games in their current league (regular season or play-off matches).

The greatest success rate overall was recorded for Red Star Belgrade’s Milan Gaji? (21 wins out of 22 fixtures), while Bayern Munich’s Serge Gnabry leads the table for the big-5 (21/23). The most successful post-COVID players in the other four major European championships are Bernardo Silva (Manchester City) for the Premier League, Mario Hermoso (Atlético de Madrid) for the Liga, Jonathan David (LOSC) for Ligue 1 and Alexis Saelemaekers (Milan) for Serie A.

At the opposite end of the table, Bastian Oczipka (Schalke 04) did not win any of the 23 German Bundesliga matches played as a starting 11 player. The lowest success rates in the other major European leagues were observed for Sam Johnstone (West Bromwich Albion, 2/27) in England, Anaitz Arbilla (Eibar, 2/21) in Spain, Simone Iacoponi (Parma, 2/22) in Italy and Bruno Ecuélé Manga (Dijon, 2/28) in France.