This chapter analyses the regulatory approaches to inclusion and exclusion by cross-analysing the sample of sex, gender, disability and race cases. Striking a balance between inclusion and exclusion in sport is essentially concerned with the management of the physical and non-physical differences which exist between human beings. The safety rules serve to satisfy more than one objective and the categories between physical and non-physical human differences in sport are justified on the basis that they protect athletes from any foreseeable risks or harm which may ensue if ability is not matched. The protection of the sporting culture can have a detrimental effect on the participation of disabled individuals since their inclusion prompts sport to evaluate traditional norms and realign notions of ability. The categories of sport appear to be formed by making a series of assumptions about populations, which derive from evolutionary, scientific and cultural understandings of human beings.