http://www.mercurynews.com/mld/mercurynews/sports/14034569.htm Every season brings more proof of the utter mystery involved in finding quarterbacks. To remind himself of this, Scott Pioli, New England's director of player personnel, keeps a photo on his desk of the team's fifth-round pick in 2000. This was the player taken ahead of Tom Brady. His name is Dave Stachelski. He never played a down for the Patriots. "If it was so smart to pick Brady," Pioli said at the Super Bowl two years ago, "why didn't I pick him earlier than the sixth round?" .