The 260th edition of the CIES Football Observatory Weekly Post analyses the age at which players fielded during this season in 24 European top divisions were signed by their clubs of employment. Academy graduates are not included in the sample. RB Leipzig recruited its footballers at the youngest age (21.43 years on average), while MKE Ankaragücü signed them at the oldest one (29.28 years).

Marcelo Guedes (Olympique Lyonnais) heads the big-5 league rankings of players having won the highest percentage of defensive air challenges in domestic league matches this season: 136 out of 159 (85.5%). The Brazilian outranks three English Premier League players: Harry Maguire, Virgil van Dijk and Shane Duffy. The top 50s for the big-5 and 26 other European competitions are available in issue number 259 of the CIES Football Observatory Weekly Post.

Issue number 258 of the CIES Football Observatory Weekly Post ranks 27 top division leagues of UEFA member countries according to the percentage of goals scored during the current season by expatriate footballers. At the top of the table is Cyprus (86.8% of foreign goals), ahead of Turkey (80.7%) and England (68.8%).

Issue number 257 of the CIES Football Observatory Weekly Post presents the players with the highest estimated transfer value per big-5 league club. The potentially most expensive player overall, Kylian Mbappé (€228 million), represents 25.9% of the total squad value of Paris St-Germain. A similar percentage was measured for Jadon Sancho (€148 million, 24.9%) at Borussia Dortmund.

The CIES Football Observatory has developed an exclusive approach to measure the technical performance of players on an objective basis using data provided by OptaPro. Issue number 256 of the Weekly Post presents the best performing big-5 league footballers for last 1,000 minutes played. The rankings only include players fielded for at least 630 minutes since January 1st 2019.

Issue number 255 of the CIES Football Observatory Weekly Post ranks big-5 league teams according to the ratio between fouls suffered and committed during the current season using data from OptaPro. FC Barcelona players suffered the most fouls with respect to those committed (1.5 times). At the opposite end is Brighton & Hove with a ratio of 0.68.

Issue number 254 of the CIES Football Weekly Post investigates InStat data to present the 20 clubs with the highest and lowest percentages of shots on target both in the five major European leagues and in twenty-five other domestic championships. The figures vary from 48.6% (Manchester United) and 28.9% (Cagliari) in the big-5, as well as from 50.4% (Ajax) and 31.7% (four different clubs) in the other competitions surveyed.

Weekly Post number 253 presents the aggregated transfer value of big-5 league clubs. According to the algorithm exclusively developed by the CIES Football Observatory, the estimated value of the squad of five teams is over one billion euro. Four of them are from the Premier League, which reflects the financial power of the English top division. Barcelona is the best-ranked non-English team.

Issue number 252 of the CIES Football Observatory Weekly Post relies on OptaPro data to rank big-5 league footballers according to the number of domestic league minutes played per successful dribble over the last 365 days. Lionel Messi heads the rankings with a dribble achieved every 19.2 minutes, ahead of Allan Saint-Maximin (19.8) and Eden Hazard (21.0). The analysis only includes footballers who played at least 1,800 minutes (1,500 for current Bundesliga players).

Issue number 251 of the CIES Football Observatory Weekly Post highlights the 20 most experienced young players from 22 European competitions per year of birth. The rankings were elaborated using an exclusive methodology weighting domestic league minutes played by footballers during the last two years according to the sporting strength of employer teams.

The CIES Football Observatory celebrates the 250th edition of its Weekly Post with an exclusive analysis on the contribution of clubs in training the players fielded in big-5 league matches during the last five years. Training clubs are those where players have been for at least three seasons between the ages of 15 and 21. The rankings are elaborated by summing minutes played in the big-5 since January 1st 2014 by all of the footballers trained per club.

Who are the footballers having played the most minutes in the big-5 leagues during the last five years? This is the question answered in issue number 249 of the CIES Football Observatory Weekly Post. Samir Handanovi? (Inter) tops the table for goalkeepers, while César Azpilicueta (Chelsea) heads the rankings for outfield players.

No team in the 35 European competitions surveyed needed as few shots to score as Paris St-Germain. The French side scored so far every 4.7 shots. According to the exclusive InStat data, this ratio was inferior to five for another big-5 league club only: Borussia Dortmund. The top three per league is available in issue number 248 of the CIES Football Observatory Weekly Post.

Issue number 247 of the CIES Football Observatory Weekly Post presents big-5 league players whose current estimated value exceeds the most the fee paid by recruiting teams during last summer. Rodri Hernández (+€45 million) tops the table for fee-paying transfers ahead of Lucas Torreira (+€44m), while Emre Can (+€45m) heads the rankings for free agents ahead of Stefan de Vrij (+€39m).

Issue number 246 of the CIES Football Observatory Weekly Post analyses the pitch production of big-5 league clubs during the first part of the current season to highlight if they have over- or under-performed in terms of points achieved. The findings suggest that Manchester City will finally beat Liverpool in the English Premier League title race.

The first Weekly Post of the year presents the 100 big-5 league players with the highest transfer value according to the exclusive CIES Football Observatory algorithm. The 20-year-old French prodigy Kylian Mbappé (€218.5 million) tops the list ahead of Harry Kane (€200.3m) and Neymar (€197.1m).

The last CIES Football Observatory Weekly Post of the year 2018 highlights players whose teams have achieved the most or least points per match when they were in the starting 11 than when this was not the case. The most positive gap in absolute was recorded for Christophe Jallet (OGC Nice): 7 wins out of the 7 matches that he started compared to only 0.44 points per match for the remaining games.

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).

The last Weekly Post before the summer break ranks teams participating in the 2018 FIFA World Cup according to the transfer value of squad members, estimated from the CIES Football Observatory algorithm. At the top three positions of the table are France (€1.41 billion), England (€1.39 billion) and Brazil (€1.27 billion).