Eye-opening contributions from the stars of the game make this a powerful, groundbreaking investigation into the mind of the professional golfer. Professional golf is the most remorseless of sports, unique in the complexity of its demands. Technical perfection must be produced in short, concentrated bursts of synchronised movement. Huge mental strength is required. Why, then, do we know so little about what it takes to succeed - even survive - at the highest level? What separates the good from the great? What are the rituals of preparation and execution? How does an elite team come together? In a truly groundbreaking expose of professional golf, Michael Calvin and Thomas Bjørn - captain of the 2018 European Ryder Cup Team - capture the distinctive nature of the game, and the principles and philosophies of players who dominate the world rankings. With unprecedented access to the European Tour players, and in-depth interviews with the European Ryder Cup team, Calvin reveals a sport which operates entirely within the finest margins of excellence.