General manager Walt Jocketty and the club will be traveling to San Francisco with 28 players to fill 25 spots. They still have 15 pitchers and 13 position players.
"We haven't had a chance to talk about it," Jocketty said on Wednesday just after the Reds learned they would be the second seed vs. the No. 3 seed Giants. "But, as far as the roster, it won't be much different because of who we play."
Among players that could be on the roster bubble, for this round: relievers Logan Ondrusek, J.J. Hoover and Alfredo Simon and starter Mike Leake. If the club does not carry three catchers, Devin Mesoraco would likely be on the outside looking in.
The Reds also haven't decided whether or not that they would use three or four starting pitchers. If Homer Bailey doesn't get a start, he would work out of the bullpen in the NLDS.
Being sent home for the offseason are pitchers Pedro Villarreal and Todd Redmond. Shortstop Didi Gregorius, infielder Henry Rodriguez, outfielder Denis Phipps and left-handed pitcher Tony Cingrani will be going to the team's complex in Goodyear, Ariz.
"They will stay game ready in the event of an injury or something. Everyone else will travel with us," Jocketty said.
Jocketty expected a final roster to be announced following Friday afternoon's workout at AT&T Park.
After they conclude the regular season vs. the Cardinals, the Reds are scheduled to fly directly to San Francisco and not land until around 2 a.m. PT. Because of that, the club is not holding a workout on Thursday.
"That will be an adjustment there," Reds manager Dusty Baker said of the time changes. "At least we're coming here before we went there. That's a partial adjustment."