Issue number 243 of the CIES Football Observatory Weekly Post presents the top 20 tables for big-5 league players whose transfer values have increased the most during the last three months both in absolute and relative terms. At the head of the two rankings is the fresh English full international and Borussia Dortmund player Jadon Sancho: +€78 million and +806%.

Issue number 242 of the CIES Football Observatory Weekly Post relies on InStat data to present the average effective time of games in 37 European competitions. The Swedish Allsvenskan is the league with the most fluid matches (60.4% of effective time), just ahead the UEFA Champions League (60.2%). The Portuguese Primeira Liga finds itself in the opposite position (50.9%).

Issue number 241 of the CIES Football Observatory Weekly Post ranks countries according to the number of domestic league minutes played by their representatives in the big-5. The French top the rankings (19.7% of total minutes) ahead of the Spaniards (15.2%) and the Germans (9.8%). Overall, players originating from 85 countries have taken part in big-5 league matches so far this season.

Issue number 240 of the CIES Football Observatory Weekly Post presents the ten most fielded U21 players in the big-5 leagues and Portuguese top division. Until last Friday, eleven U21 footballers had played the totality of domestic league minutes. Among them notably are hot prospects such as Rúben Neves, Jules Koundé, Arne Maier, Nikola Milenkovi? and Rúben Dias.

Every month, the CIES Football Observatory updates the transfer valuations of big-5 league players using its exclusive algorithm. Issue number 239 of the Weekly Post presents the top 10 list for each position. The highest figure overall was recorded for Kylian Mbappé (€216.5m). Ederson, Umtiti, Alexander-Arnold and Alli top their position’s rankings.

Issue number 238 of the CIES Football Observatory Weekly Post highlights clubs having trained the most players currently present in 31 European top divisions and the big-5 leagues respectively. The highest figures were recorded for AFC Ajax for players in the 31 top divisions (77) and Real Madrid for footballers in the big-5 (36).

The CIES Football Observatory has developed an exclusive approach to assess the performance of players using the statistics produced by the leading data company OptaPro. Issue number 237 of the Weekly Post presents big-5 league footballers with the highest scores for the last 1,000 domestic league minutes played.

Only three teams in Europe have fielded this season players who have been in the first team squad since more than five years on average: Real Madrid (5.84 years), Barcelona (5.36) and Bayern Munich (5.26). Issue number 236 of the CIES Football Observatory Weekly Post also reveals that another Champions League participant, Viktoria Plze?, is the most stable club outside of the big-5 (4.28 years).

Issue number 235 of the CIES Football Observatory Weekly Post highlights teams having fielded the youngest and oldest line-ups in domestic league games so far this season (or since 1st of July for summer leagues). The extreme values at big-5 league level were recorded for two Italian teams: Fiorentina (23.79 years) and Chievo (29.53 years).

Issue number 234 of the CIES Football Observatory Weekly Post ranks clubs across Europe according to the number of minutes per shot attempted. The following teams head the table in the five major European leagues: Manchester City, Juventus, Olympique Lyonnais, Barcelona and Bayern Munich. Slavia Praha tops the rankings outside of the big-5.

Manchester City has spent almost €1 billion in transfer indemnities to sign its present squad members (add-ons included). This is the highest figure ever measured for a football team. Issue number 233 of the CIES Football Observatory Weekly Post presents the data for all of the big-5 league teams.

The first CIES Football Observatory Weekly Post of the 2018/19 season assesses from an economic perspective paid transfers having taken place during last summer. It highlights that Thibaut Courtois went to Real Madrid for a much lower amount than the estimated fair price (-€23 M). Conversely, Chelsea FC paid over the odds to recruit his substitute: Kepa Arrizabalaga (+€45 M).