Four teams determined not to relinquish their chances of a division title forced Major League Baseball to an unprecedented extra day of the season.

Not one, but two winner-take-all games loom on Monday to determine the champions of the National League’s West and Central division, after the Los Angeles Dodgers, Colorado Rockies, Chicago Cubs and Milwaukee Brewers played Game 162 with a playoff-like urgency – and steamrolled their competitors by a combined score of 48-5.

The anticlimactic Sunday will yield to a taut pair of Game 163s on Monday – with a quartet of division rivals finally face to face.

It will be the first time in baseball history two divisions will be determined by one-game playoff. And it’s the first time since MLB went to a two-wild card format in 2012 that a division winner was determined by playoff.

Up first: The Chicago Cubs and Milwaukee Brewers, from Wrigley Field at 1:05 p.m. ET. Chicago defeated the St. Louis Cardinals 10-5 on Sunday as the Brewers routed the Detroit Tigers 11-0.

The second leg: The Colorado Rockies and Los Angeles Dodgers, from Dodger Stadium at 4:08 ET/1:08 PT. Both games will be broadcast on ESPN.

A closer look at what looms:

Brewers at Cubs (1:05 ET/12:05 CT)

Records: 95-67

How they got here: The Cubs needed to win four of their five final games to stave off the Brewers, who swept the Tigers to erase a one-game final-weekend deficit.

Head-to-head: The Cubs were 11-8 against the Brewers, with Milwaukee winning four of the six games between the clubs in September.

Likely pitching plan: The Cubs will start lefty Jose Quintana, while Milwaukee did not announce a starter. Jhoulys Chacin is on turn to start, but manager Craig Counsell could opt for a "bullpen" game, as he did earlier this week in a key game at St. Louis.

At stake: The winner will play host to the wild-card winner in the NL Division Series, starting Thursday. The loser must win a home wild-card game on Tuesday against the Rockies-Dodgers loser.

Rockies at Dodgers (4:08 ET/1:08 PT)

Records: 91-71

How they got here: The Dodgers swept their rivals in San Francisco, including by a 15-0 count on Sunday, to overcome a one-game divisional deficit this weekend. Colorado beat Washington 12-0 on Sunday, capping a stirring 9-1 finish.

Head-to-head: The Dodgers went 12-7 against the Rockies, including a 6-3 mark at Dodger Stadium. Los Angeles swept three from Colorado Sept. 17-19 to build what seemed a sturdy 2 1/2-game lead.

Likely pitching plan: The Dodgers will start dominant rookie Walker Buehler, while the Rockies have German Marquez lined up.

At stake: The winner will play host to the first two games of an NL Division Series against the Atlanta Braves, beginning Thursday. The loser travels to the Brewers-Cubs loser.