Once again, FP is so full of crap.
http://www.answerbag.com/q_view/7022The rules for determining winning pitchers:
*Credit the starting pitcher with a game won only if he has pitched at least five complete innings and his team not only is in the lead when he is replaced but remains in the lead the remainder of the game.
*The "must pitch five complete innings" rule in respect to the starting pitcher shall be in effect for all games of six or more innings. In a five inning game, credit the starting pitcher with a game won if he has pitched at least four complete innings and his team not only is in the lead when he is replaced but remains in the lead the remainder of the game.