coolstandings has the odds at 98.8% for the Nats winning the division.
Odds are just a guess. Wins count.
Still, I think Lannan will win tomorrow and Gio will win on Tuesday. I also think the Pirates will win one of their games. Medlen pitched today, and other Atlanta pitchers are not as good. Doesn't mean I will stop worrying until the Nats win one more, though.