Deadline Deals Dictate NL West Champ?

How important will the next 15 hours be in deciding who remains standing between the top 4 teams in the west? The Dodgers, Diamondbacks, Padres, and Rockies are separated by just 3.5 games. The Atlanta Braves landed a big fish today that could shift power in the East ~ it will be interesting to see what happens on the left coast.