Up to now, three major conceptualizations of career transitions (CTs) have been adopted in sport psychology. First, pioneer researchers on the transition to the post-sport career (e.g., Baillie & Danish, 1992; Parker, 1994; Sinclair & Orlick, 1994; Swain, 1991; Werthner & Orlick, 1986) based their conceptual understanding of this transition on the work of Schlossberg (1981, 1984) in counselling psychology. Schlossberg (1981) suggested that, “a transition can be said to occur if an event or non-event results in a change in assumptions about oneself and the world, and thus requires a corresponding change in one’s behavior and relationships” (p. 5). This definition and relevant theoretical framework (i.e., the human adaptation to transition model) have been and still are popular among transition researchers in sport psychology (e.g., Küttel, Boyle, & Schmid, 2017; Pummell, Harwood, & Lavallee, 2008).