000064476 001__ 64476 000064476 005__ 20180124111430.0 000064476 0248_ $$2sideral$$a103980 000064476 037__ $$aART-2017-103980 000064476 041__ $$aeng 000064476 100__ $$aZambon Ferraresi, Fabíola 000064476 245__ $$aSports Results Measurement and Efficiency in UEFA Champions League 000064476 260__ $$c2017 000064476 5060_ $$aAccess copy available to the general public$$fUnrestricted 000064476 5203_ $$aThe UEFA Champions League (UCL) is the most important competition at club level. Nevertheless, the sports technical efficiency of this competition has been scarcely analysed. The present paper seeks to fill this gap by analysing from a longitudinal and data panel perspective all the teams that played in the UCL during nine seasons (2004/05 to 2012/13). From a methodological perspective, we have used Data Envelopment Analysis (DEA), a deterministic non-parametric frontier method. In particular, we have applied constant return to scale and variable return to scale DEA assumptions. Due to the tournament characteristics (a group stage in the first phase, and a knockout system in the second phase), we have selected an input-oriented model. As the output (sporting result), we have proposed the use of the coefficients applied by UEFA from UCL revenue distribution. Efficiency is analysed in UCL considering a long period of time and applying the coefficients of revenue distribution as sporting results measurement. On account of differences from previous studies, we are able to obtain some interesting results. First, there is a high inefficiency level in UCL in the analysed seasons. Second, many clubs could be efficient in one season but stop being efficient for all the seasons simultaneously. As a consequence, the teams have many problems maintaining their efficiency during the seasons. Third, we have identified some regular inefficiency sources: waste of resources and inappropriate sporting tactics. Finally, from a longitudinal perspective, it is suggested an improvement in sporting tactics applied by the teams in the last seasons compared with the previous seasons. 000064476 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttp://creativecommons.org/licenses/by-nc/3.0/es/ 000064476 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000064476 700__ $$0(orcid)0000-0002-0772-0321$$aGarcía Cebrián, Lucía Isabel$$uUniversidad de Zaragoza 000064476 700__ $$aLera López, Fernando 000064476 7102_ $$14012$$2650$$aUniversidad de Zaragoza$$bDepartamento de Dirección y Organización de Empresas$$cOrganización de Empresas 000064476 773__ $$g4, 4 (2017), 291-311$$pAthens j. sports$$tAthens Journal of Sports$$x2241-7915 000064476 85641 $$uhttp://www.athensjournals.gr/sports/2017-4-4-4-Zambom-Ferraresi.pdf$$zTexto completo de la revista 000064476 8564_ $$s987001$$uhttps://zaguan.unizar.es/record/64476/files/texto_completo.pdf$$yVersión publicada 000064476 8564_ $$s93922$$uhttps://zaguan.unizar.es/record/64476/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000064476 909CO $$ooai:zaguan.unizar.es:64476$$particulos$$pdriver 000064476 951__ $$a2018-01-24-09:56:50 000064476 980__ $$aARTICLE