With one day left in the season:
AL:
Either the Yankees or Blue Jays will be the 1 seed, the other will be the 4 seed. Toronto holds the tiebreaker, so the Yankees need a win and Jays loss tomorrow.
Seattle will be the 2 seed
Detroit or Cleveland will be the 3 seed. Detroit's win today clinches a playoff spot for them. Cleveland holds the tiebreaker, so 2 Cleveland wins or a win and Tigers loss will win the AL Central for Cleveland. Tigers need at least one Cleveland loss and a win.
Boston will be the 5 seed, unless they lose tomorrow and Cleveland wins twice. Boston wins the tiebreaker against Cleveland, loses it against Detroit.
Houston needs 2 wins and 2 Cleveland losses to sneak in as the 6 seed.
NL:
Milwaukee is the 1 seed.
Philly is the 2 seed.
LA Dodgers are the 3 seed.
Cubs are the 4 seed.
Padres are the 5 seed.
Mets or Reds are the 6 seed. Reds hold the tiebreaker, so the Mets still need help, even though they won today. Both have a magic number of 2, effectively.