Billy Fitzgerald is a sports legend you've never heard of. The 57-year-old former minor league catcher coaches baseball and basketball at New Orleans' Isidore Newman School; not exactly a high-profile assignment. Ubiquitously called "Coach Fitz," this veteran mentor personifies a tough-as-nails coaching philosophy seldom seen in these days of player perks and recruiting wars. Not surprisingly, his old-school ways are under fire from parents at the expensive Louisiana prep school, but this gruff mentor does have hundreds of defenders among his former players (most notably NFL quarterback Peyton Manning), who insist that Coach Fitz changed their lives. Bestselling author Michael Lewis once labored under the verbal lashes of this unforgettable man; now he, too, pays tribute to a man who taught him some of life's most important lessons.