This paper continues the discussion of three values of sport (safety, fairness, inclusion) that has developed around the theme of inclusion of transwomen in the female category in World Rugby, as discussed by Pike, Burke and Imbrišević. In contrast to their discussion, in which these three values have been seen from the limited perspective of the inclusion of one group of athletes into a specific category of one sport, they are here discussed in the context of the categorization in sport (...) in general, with a focus on constitutive and eligibility rules. Constitutive rules give a strong foundation for eligibility rules. From the perspective of eligibility rules, the value of inclusion is identified as the underlying main value, while fairness and safety are its functions. This view rehabilitates the value of inclusion and has implications for how we think about the inclusion of athletes in sport, and for the creation of categories. (shrink)