From the preliminary exercise that took place initially, there did appear to be a racial undertone to the decisions of the referees in terms of disciplinary sanctions. Players with a darker skin tone were penalised more often than their lighter-skinned peers, although they were also booked less often as well in comparison. In this model however, there is no evidence of racial bias towards darker skinned players in this panel when controlling for match performance affecting variables and a variety of other club controls.  With negative coefficients for Mixed, Dark and Very Dark players ranging from around -0.5 to -0.75 for both linear and poisson data, we can see that the slope of the regression line does satisfy the condition for the null hypothesis at the 5% level. This means we cannot reject the null hypothesis and fail to accept the alternative hypothesis, giving us a conclusion of no racial bias being exhibited towards darker players in terms of disciplinary sanctions.