The 49ers had not bothered to interview college coaches for the head-coaching job in part because its front-office analysis found that most of the college coaches hired in the past 20 years to run N.F.L. teams had failed. But in Schwartz’s view, college coaches tended to fail in the N.F.L. mainly because the pros hired the famous coaches from the old-money schools, on the premise that those who won the most games were the best coaches. But was this smart? Notre Dame might have a good football team, but how much of its success came from the desire of every Catholic in the country to play for Notre Dame?Looking for fresh coaching talent, Schwartz analyzed the offensive and defensive statistics of what he called the “midlevel schools” in search of any that had enjoyed success out of proportion to their stature. On offense, Texas Tech’s numbers leapt out as positively freakish: a midlevel school, playing against the toughest football schools in the country, with the nation’s highest scoring offense. Mike Leach had become the Texas Tech head coach before the 2000 season, and from that moment its quarterbacks were transformed into superstars. In Leach’s first three seasons, he played a quarterback, Kliff Kingsbury, who wound up passing for more yards than all but three quarterbacks in the history of major college football. When Kingsbury graduated (he is now with the New York Jets), he was replaced by a fifth-year senior named B.J. Symons, who threw 52 touchdown passes and set a single-season college record for passing yards (5,833). The next year, Symons graduated and was succeeded by another senior – like Symons, a fifth-year senior, meaning he had sat out a season. The new quarterback, who had seldom played at Tech before then, was Sonny Cumbie, and Cumbie’s 4,742 passing yards in 2004 was the sixth-best year in N.C.A.A. history.