HOW LONG HAS IT BEEN SINCE Texas could really brag about its quarterbacks? Try half a century. That was the last golden age, when Sammy Baugh, Y.?A. Tittle, Bobby Layne, and Davey O’Brien all walked the earth. Giants of Texas high school football, the first three made the Pro Football Hall of Fame, while the latter won the 1938 Heisman Trophy and gave his name to the award that is bestowed upon the best quarterback in college football.