"He's doing well," Speier said. "The report is they just want to keep him one more day and make sure everything is fine before they release him.
"It's probably much-needed -- just another day of rest, just away from [the media] and this whole situation. It can be stressful. I found out the last couple days. They'll probably give him the OK to come home [Sunday]."
Baker has been in the hospital since Wednesday, being treated for an irregular heartbeat.
Speier, who has filled in in Baker's absence, downplayed the question of Baker's health being worse than initially thought, and he reemphasized the fact that extra precaution is being taken for the 63-year-old skipper.
"They just wanted to be thorough," Speier said. "I think that in itself is the best answer -- just to make sure."
Speier added that he hasn't been in contact with Baker since Thursday.
"I want him just to get away from it as much as he can," Speier said.
But it's far from out-of-sight, out-of-mind with Baker in the Reds clubhouse. Speier said the players ask about their skipper each day and hope to have him back as soon as possible.
"Hopefully we can get Dusty back and he'll have a chance to celebrate with us," said Reds reliever Sean Marshall. "I know he [can't wait] to. He's been our skipper and he's led us this far."
Mark Clements is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.