Steve Young. Ty Detmer. Jim McMahon. Robbie Bosco. BYU has seen some incredible quarterbacks pass through its ranks. Bosco led BYU to its first national championship. Detmer won a Heisman Trophy. Young was a Super Bowl MVP. McMahon rewrote the BYU and NCAA record books. But each of these outstanding players didn&amp;#8217;t explode on the [...]