Since 12 March 2012, the CIES Football Observatory has published weekly posts analysing professional football from different angles. The Weekly Post aims to make available to the general public the key findings of the multiple approaches which have been developed by our research team. These include the demographic analysis of squads, technical studies of performance at both individual and collective levels and the economic valuation of professional footballers, for example. Please write to football.observatory@cies.ch to suggest future case studies which could be of interest to you.