RT Journal Article T1 Investment in Signings in LaLiga: Analysis of SportsDirectors’ Efficiency A1 Megía-Cayuela, Daniel K1 Fútbol K1 Gestión K1 Deportes K1 Economía AB Objectives: This article evaluates the efficiency in professional football related to the financial and sports management of clubs.The study framework is the Spanish First Division in the 2022/2023 season.Methods: The methodology applied is a decision envelopment analysis (DEA) that allows analyzing the efficiency in the decision-making bodies (DMUs) by linking the position at the final table with different variables on the management of the footballers.Unlike previous works, we include a cluster analysis with an efficiency ranking that allows us to know what the commoncharacteristics of these clubs and their sporting and financial strategies are.Results: The main conclusion with this proposal is the low rate of average in efficiency, but we consider there are two keys to gethigh levels of success: the numbers of operations of transferring and applying a polity of zero cost signing new football players.JEL Classification: D52, D57, F61, G14, C88, L83 PB Wiley YR 2025 FD 2025 LK https://hdl.handle.net/10630/39138 UL https://hdl.handle.net/10630/39138 LA eng NO Megía Cayuela, D. (2025), Investment in Signings in LaLiga: Analysis of Sports Directors’ Efficiency. Social Science Quarterly, 106: e70047. https://doi.org/10.1111/ssqu.70047 NO Funding for open access charge: Universidad de Málaga / CBUA DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 19 ene 2026