Late September in the baseball year is usually the time for post season surges, when teams jockey for position and aim to win the division or wildcard. That’s probably the reason that Moneyball, the book, now movie starring Brad Pitt about the 2002 Oakland Athletics, is out this Friday. That year, under famed GM Billy Beane, the A’s won 103 games, collecting a late season stash of victories (including a 20-game winning streak) en route to sealing the A.L. west division title. How they got there is more impressive.