Mark McCormack 'the most powerful man in sport’ reveals the secret of his success in business issues such as analysing yourself and others, sales, negotiation, time management, decision-making and communication. IMG (International Management Group) was founded by himself as it the first and is the most successful sports management company in the world, becoming a multi-million dollars, worldwide in the business and marketing spheres corporation. What They Don't Teach You at Harvard Business School fills the gaps between a business school education and the street knowledge that comes from the day-to-day experience of running a business and managing people. It shares the business skills, techniques and wisdom gleaned from twenty-five years of founded IMG (International Management Group) experience.