AC

Early one afternoon in the fall of 2005, 17-year-old Mitch Mustain -- who at the time was a senior at Springdale High School in Arkansas, and widely considered the best high school quarterback in the United States -- decided he was going to take advantage of a free period between classes and pop into the small office occupied by his high school football coach, Gus Malzahn. Mustain, in the midst of arguably the greatest season in the history of Arkansas prep football, had been going over Malzahn's scouting report for one of Springdale's upcoming opponents. Though he felt as if he had it more or less memorized, it was always fun to pick Coach Malzahn's brain for hidden insights. Malzahn could remember tiny details from plays, and the flaws that were their undoing, even if they had occurred years ago. His mind, his players had learned, was like a digital archive. Before he entered Malzahn's office, Mustain took a peek through the tiny rectangular window in the door. It's hard to...