Why did Michael Jordan quit basketball and take up baseball? Why was Martina Navratilova so successful as a professional tennis player? These and many other questions about aspects of motivation and emotion in sport are addressed in this book which is newly available in paperback. Reversal theory's systematic conceptual framework allows a unique perspective for interpreting behaviour in sport contexts. Within each chapter, real-life examples are combined with research findings to provide an understanding of the emotional background and changes which accompany the individual's unique experience in sport. In addition, suggestions as to alications of reversal theory in new areas of sport psychology and the future direction of reversal theory-based sport research are outlined. For those interested in a truly insightful understanding of human behaviour in sport, this book will be required reading.