Just worked up a simple graph showing how the race shaped up. And, since the Twins are now in HFA position for the entire American League, here's how that has looked, against their two closest competitors: Not profound, but cute, no?
....I've noticed that the vertical lines are slightly imprecisely placed, especially toward the right side of the graphs. For example, the line marked "9/14/10" is a little too far to the right; it actually intersects with dots that represent the state of the races as of the end of play on September 15, not 14. Oh, well: I blame my spreadsheet application.