The NL Central was really a bastion of mediocrity all season. The Cubs got off to a 10-2 start, and they were .500 after that. Reds, Brewers and Cards were all hovering around .500. It's possible that the NL Central might have been the worst division in the NL despite getting 4 teams into the playoffs.
All 3 AL Central teams were bounced in the first round.
If the Padres win tonight, all 4 DS series will be between divisional opponents.