Welcome to the NL grunion run ....
The Associated Press issued this directive on how the NL will be settled, and it'll be updated after tonight's games.
For a classic explanation of a four-team tie, jump to the end:
NL East: If New York and Philadelphia (both 87-71) finished tied, and the wild card is not assured of coming from the NL East, they would play tiebreaker game Monday in Philadelphia. If the wild card is assured of coming from the NL East, Philadelphia would win the division because it won the season series 12-6, and the Mets would be the wild
card.
NL Central: If Chicago (83-76) and Milwaukee (81-78) finish with the same record, they would play tiebreaker game Monday at Chicago.
NL West: If Arizona (89-70) and San Diego (88-71) finish with the same record, and the wild card is not assured of coming from the NL West, they would play a tiebreaker game Monday in Phoenix.
If San Diego and Colorado (87-72) finish with the same record, and the wild card is not assured of coming from the NL West, they would play a tiebreaker game Monday in San Diego. If the wild card is assured of coming from the NL West, then division title would be based on who won the season series. Colorado beat San Diego 10-8 and Arizona beat San Diego 10-8.
Wild Card: In the event two teams tie for the wild card and cannot win the division, Colorado would host New York, Philadelphia or San Diego in a tiebreaker; New York would host Arizona or San Diego; Philadelphia would host Arizona; and San Diego would host Arizona or Philadelphia.
Three teams with same record: In the event three teams finish with the same record, and two of them are tied for first place, the two teams in the same division would play a tiebreaker Monday for the division title. The loser of that game would then play a wild-card tiebreaker Tuesday against the team from the other division.
Four teams with same record: In the event four teams finish with the same record, and they all
are tied for first place, NL East and NL West tiebreakers would be played Monday; the losing teams would meet in a wild-card tiebreaker Tuesday.
In the event four teams finish with the same record, and two are tied for second place in the NL West, New York and Philadelphia would play the NL East tiebreaker Monday; the loser would play a three-team, two-day, wild-card tiebreaker with the NL West teams on Tuesday and Wednesday. In the that scenario, the team with the best head-to-head record among the three teams in the wild-card tiebreaker would get the choice of having a bye on Tuesday or playing both games at home.