Mark H. McCormack is the founder and chairman of International Management Group. Sports Illustrated has called him "the most powerful man in sports." Mr. McCormack's golf clients include Hall of Famers Arnold Palmer, Gary Player, Nancy Lopez and Betsy King, and current stars such as Tiger Woods, David Duval, Colin Montgomerie, Vijay Singh, Mark O'Meara, Bernhard Langer, Annika Sorenstam, Karrie Webb, Se Ri Pak, Laura Davies, Curtis Strange, David Frost, Jeff Maggert, Jesper Parnevik and Craig Parry.