The role of ecology on sports and development has been gaining more and more attention in the science world however, more research is still of course needed. This article discusses different and untraditional ways that can increase expertise in sports; unlike the common believe that expertise is gained from structured practice, they propose expert performance might be gained through highly unstructured activities. They also propose that professional advantage is selective to only some components of performance instead of all of it. The article focuses on a theory called the Bronfenbrenner’s Microsystem; this is a theory that children develop through a variation of social and cultural aspects. Furthermore, they conclude that influence of cultural importance, instructional resources, familial support, sport maturity, and depth of competition affects development more than physical training.