Today’s sport is “on the move” in a sense that athletes, coaches, sport psychology practitioners and other sporting people are internationally highly mobile. In response, there is a growing interest and the need for sport psychology researchers and practitioners to understand athletic migration processes and develop strategies to effectively help both migrants and hosts to mutually adjust in the shared context. The ISSP Position Stand on transnationalism, mobility, and acculturation in and through sport (Ryba et al., 2017) provides a set of aids to interested scholars. First, the authors clarify migration terminology (e.g., mobility and migration, cultural transition and acculturation, immigrant and transnational athletes) to facilitate international/intercultural collaboration that is inevitable when professionals want to study or help migrants. Second, cultural transition and acculturation frameworks with examples of high quality qualitative and quantitative research on migrants and hosts are introduced, and relevant methodological tips are provided. Third, the authors analyze different forms of mobile practice and highlight strategies used by experienced mobile practitioners as materials for the readers’ cultural reflexivity. Finally, they outline major challenges and potential solutions to further develop athletic migration research and mobile practice. The authors suggest an idea of cultural praxis of athletic migration as an approach that blends analyses of migrants’ destination and home environmental contexts, studying adaptation process of both migrants and hosts, and identifying strategies facilitating mutual adjustment, athletes’ performance and well-being. Among practical recommendations the authors promote shared acculturation approaches, sharing experiences between mobile practitioners from different countries, education of applied sport psychology students on mobile practices and education of coaches aimed at helping them to become cultural leaders in.