Haas, D. J., Kocher, M. G., Sutter, M. (2004), Measuring efficiency of German football teams by Data Envelopment Analysis.
published in: Central European Journal of Operations Research 12: 251-268.
Abstract: We study the efficiency of football teams in the 1999/2000 season of the German Bundesliga by Data Envelopment Analysis (DEA). Our input variables are wage bills, separately for players and coaches. Output is measured by points awarded, total revenues and average stadium utilization. Efficiency scores in our empirical results are not correlated with rank in the league and that medium- and small-sized teams like SC Freiburg often outperform well-known teams like Borussia Dortmund. We decompose the sources of inefficiency into technical inefficiency and scale inefficiency and test for the sensitivity of results with respect to different input-output combinations.