Saturday night at Dodger Stadium, the 2017 NLCS between the Dodgers and Cubs will get underway with Game 1. Here is everything you need to know about the series and here is how you can watch Game 1.

A few hours prior to first pitch, both teams announced their 25-man active rosters for the NLCS. Both clubs made some fairly significant changes as well.

Chicago Cubs

The Cubbies dropped left-handed reliever Justin Wilson from their postseason roster and added Rondon in his place. Wilson, who came over from the Tigers in a high-profile trade at the deadline, has struggled in his short time with Chicago, most notably walking 19 batters in 17 2/3 regular-season innings. He faced two batters and retired them both in the NLCS.

Rondon had a tough regular season, throwing 57 1/3 innings with a 4.24 ERA. He served as the team's closer from 2014 through the 2016 trade deadline, when the Cubs picked up Aroldis Chapman. Rondon has been unable to find his 2014-15 form since suffering a triceps injury last year. He did miss time with elbow inflammation this September.

Los Angeles Dodgers

Noticeably absent: star shortstop Corey Seager. The Dodgers had to leave him off their NLCS roster due to a lingering back injury. By leaving Seager off the NLCS roster, the team gives him a chance to get healthy, and it also allows them to activate him for the World Series, should they advance .Had the Dodgers carried Seager on the NLCS roster only to have to remove him at some point due to injury, he would not be eligible for the World Series.

Culberson replaces Seager on the roster and he figures to share shortstop duty to Taylor and Hernandez. Also, the Dodgers dropped reliever Pedro Baez from the roster and added Pederson. Adding Pederson makes it easier to slide Taylor from center field to shortstop, if necessary.