Figure 9
A horizontal box-and-whisker plot compares the impact of different minutes on total yellow cards per match. The x-axis represents the coefficient values ranging from -0.001 to 0.003, while the y-axis lists various categories such as Mean Min, Median Min, Mean Min Top 5, Median Min Top 5, Mean Min GK, Median Min GK, Mean Min Top 5 GK, Median Min Top 5 GK, Mean Min DF, Median Min DF, Mean Min Top 5 DF, Median Min Top 5 DF, Mean Min MF, Median Min MF, Mean Min Top 5 MF, Median Min Top 5 MF, Mean Min AT, Median Min AT, Mean Min Top 5 AT, and Median Min Top 5 AT. Each box plot shows the distribution of coefficients for these categories, with the boxes indicating the interquartile range (Q1 to Q3), the line inside the box representing the median (Q2), and the whiskers extending to the minimum and maximum values. Some categories have outliers. The plot highlights the association between higher workload and increased frequency of minor disciplinary sanctions. All values are approximated.Coefficients of Poisson regressions, impact of different minutes on Total Yellow Cards per match Note: The figure reports estimated coefficients from Poisson regressions of average yellow cards per match on seasonal workload proxies. Workload is defined as mean or median minutes played by the 50 most-utilized players. Positive coefficients indicate an association between higher workload and increased frequency of minor disciplinary sanctions. Source: Authors' elaboration