This document provides an overview of the 1-4-4 (diamond) midfield formation. It begins with an introduction and then discusses the benefits and advantages of the formation, such as central midfield domination and catering for teams with a surplus of midfield players. Potential disadvantages are also outlined, like being susceptible to quick switches of play. The document then provides examples of teams that use the formation and quotes from managers. It concludes with practical sessions to train the tactical concepts of the formation, including defending, attacking, and playing through the thirds.