This paper offers a discussion of the rationale for the creation of sports categorization criteria based on sporting genealogy and the gendered body, as proposed by Torres et al. in their article ‘Beyond Physiology: Embodied Experience, Embodied Advantage, and the Inclusion of Transgender Athletes in Competitive Sport’. The strength of their ‘phenomenological’ account lies in its complex account of human experience; but this is also what makes it impractical and difficult to operationalize. Categorization rather requires simplicity and practicability, if it (...) is to be applied to all athletes (and not exceptionally to transgender athletes). This discussion helps us to formulate three general principles for the process of categorization of athletes, relating to fairness, verifiability and practicability. (shrink)