It's hard to win a pennant, but it's harder losing one.

There are still two undecided playoff spots: the AL Central and the NL Wild Card.

In the AL Central, the Twins are 1/2 Game up on the White Sox.

If the Twins win and the White Sox lose, Minnesota wins the division and heads to Tampa Bay. In any other scenario -- both teams win, both teams lose, White Sox win/Twins lose -- the teams would remain a half-game apart and the White Sox would have to make up a September 13 rainout against Detroit.
That game would be in Chicago at 1 PM on Monday. If, after that game, the White Sox are tied for first place with the Twins, they would play Minnesota in another tiebreaker, also in Chicago, on Tuesday.

The ALDS against the Rays starts on Thursday.

Over in the NL, the Mets and Brewers are tied for the wild card.

If Milwaukee and New York remain tied, a one-game playoff would be played in New York on Monday.

Both NLDS begin on Wednesday.