Thomas, PGWalters, SLucas, POldham, ARH2026-04-172026-04-172026-01-20Journal of Sports Sciences, ISSN: 0264-0414 (Print); 1466-447X (Online), Informa UK Limited, 44(7), 880-895. doi: 10.1080/02640414.2026.26193210264-04141466-447Xhttp://hdl.handle.net/10292/20945This article explores the dynamics of social support in emerging professional athlete career transitions. Drawing on a pragmatic research paradigm and using qualitative, instrumental multi-case methodology, the article investigates how social support shapes athlete experiences. Through in-depth accounts and reflexive thematic analysis across four cases: Boxing, Rugby League, Basketball pathways, and an independent practitioner case, the article examines the realities faced by athletes, including those who migrate internationally. Central to the inquiry are questions about the attributes that facilitate or hinder dyadic support relationships, and how practical organisational and relational support can foster both personal and athletic development in and beyond sport. By integrating existential perspectives, particularly concepts of isolation, authenticity and meaning, the research findings highlight the tension athletes, parents, coaches, and practitioners experience when bending to institutional roles and external pressures. Findings reveal that the most impactful support relationships are found not in the fulfilment of transitory or functional roles, but in connection and authenticity through genuine care, trust, presence, mutual benefit, and recognition of each other’s needs. The article positions anxiety as an everyday concern in an athlete’s life. As such, the support-provider’s responsibility is to guide emerging athletes through struggles with truth and transparency, strengthening their autonomy, skills, and resilience to thrive in sport and life. This article proposes targeted recommendations relating to developmental support environments offering insights for sports personnel and athletes.© 2026 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The terms on which this article has been published allow the posting of the Accepted Manuscript in a repository by the author(s) or with their consent.Social supportathlete developmentexistential psychologyprofessional sport pathwaystalent development environments32 Biomedical and Clinical Sciences5201 Applied and Developmental Psychology42 Health Sciences3202 Clinical Sciences4207 Sports Science and Exercise52 Psychology1106 Human Movement and Sports Sciences1302 Curriculum and PedagogySport SciencesHumansSocial SupportAthletesMaleSportsQualitative ResearchInterpersonal RelationsTrustHumansInterpersonal RelationsTrustQualitative ResearchSocial SupportSportsMaleAthletesHumansSocial SupportAthletesMaleSportsQualitative ResearchInterpersonal RelationsTrustJournal ArticleOpenAccess10.1080/02640414.2026.2619321