Book excerpt: The movie Jerry Maguire and HBO series Arli$$ barely skimmed the surface. Now the true inside story of the sports agent business is exposed as never before. During baseball's evolution from national pastime to a $3.6 billion business, the game's agents have played a pivotal role in driving and (some might say) ruining the sport. In a world of unchecked egos and minimal regulation, client-stealing and financial inducements have become commonplace, leading many to label the field a cesspool, devoid of loyalties and filled with predators. Matt Sosnick entered these shark-infested waters in 1997, leaving a job as CEO of a San Francisco high-tech company to represent ballplayers--and hoping to do so while keeping his romantic love of baseball and his integrity intact. License to Deal follows Sosnick as he deals with his up-and-coming clients (his most famous is the 2003 rookie-of-the-year pitching sensation Dontrelle Willis). We become privy to never-before-disclosed stories behind the rise of baseball's most powerful agent, Scott Boras. And we get a novel perspective on the art of the deal and the economics of baseball. By one of baseball's most respected sportswriters, who is now ESPN.com's lead Insider baseball reporter, License to Deal, like Michael Lewis's bestselling Moneyball, will provide fuel for many a heated baseball discussion.