Steve Lawrence is a consultant to Cruyff Football and Ajax in the Netherlands. With a Masters in International Sports Management, Steve founded the Football Analytics Lab and is at the forefront of research into the topic of Relative Age Effects. In this article, Steve explains how the Relative Age Effect works and discusses the impact of this phenomenon. Relative Age Effects have become a well known, if slightly puzzling, phenomenon in youth football where players with birthdates at the beginning of the season have a huge…
age bias
US-based coach, John O’Sullivan, founder of Changing the Game Project and best selling author, provides a perspective on the potential pitfalls of the US development model. As our ability to accurately measure players’ tangible development statistics improves, are we losing sight of the intangible factors which can’t always be measured? The cost of focussing exclusively on the numbers may be greater than we imagined. In 2005, the coaches at one of the top English Premier League Youth Football Academies held one of their semi-annual meetings to…