Supplemental material UEFA/CONMEBOL

" HHI-DCB Seasons UEFA&CONMEBOL" shows the HHI and DCB values calculated for the different leagues of the UEFA and CONMEBOL Federations, for the 2009/10 to 2018/19 seasons. "DCB means and variances" shows the average annual values for each country. "Test and estimated models" shows the maximum likelihood estimates with panel data of the Cobb-Douglas function with country factor and pooled model. The results of the tests used are also shown.