[Montano]

Braves/Giants win. The simplest of all. Giants win the NL West, Braves take the wild-card. Everyone concerned heaves a sigh of relief. Except San Diego, of course.
Phillies/Giants win. Giants take the NL West. Braves face the Padres in a one-game playoff at Turner Field on Monday to determine the wild-card winner.
Phillies/Padres win. Padres take the NL West, based on a better head-to-head record (13-5) against the Giants, but San Francisco get the wild-card, with one more W than Atlanta.
Braves/Padres win. Or, as Bud Selig refers to it, "The Doomsday Scenario," because all three teams would then finish with 91 wins. In the event of... Wait - I think we'll go for a new paragraph.

In the event of all three teams ending level, the Giants and Padres would play a one-game playoff in San Diego on Monday to determine the NL West champion. The loser would travel to Turner Field on Tuesday, for a contest to decide the NL Wild-Card The winner of that contest then goes on to play in the NLDS on Wednesday. If it's SF or SD, that would be their fourth game, in four days, in four different cities.