Introduction to the Constraints-Led Approach: Application in Football is a coaching resource football coaches can use to understand key theoretical components of the constraints-led approach. Sections discuss ecological dynamics, perception-action, degrees of freedom and complexity theory. Examples are provided within theoretical chapters to assist readers in their practical application. Over 30 designed practices using the constraints-led approach show readers how the theory translates into practice. These are ordered by the aim of the practice, from in possession, to defensive transition, to out of possession and attacking transition. Currently, there are no books on the market covering the constraints-led approach specific to football. The aim is to make this book accessible to football coaches without the necessity to focus solely on academic theory.