CHICAGO — Cincinnati Reds Manager Dusty Baker underwent another test Thursday and will remain hospitalized at least one more day so doctors can monitor his progress after he was diagnosed with an irregular heartbeat.
If all goes well, Baker could return to Cincinnati on Friday, the team said.
General Manager Walt Jocketty visited Baker in the hospital Thursday morning and reported that the veteran manager was feeling good.
Bench coach Chris Speier served as acting manager for a second straight game as the Reds swept the Cubs.
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"I worry about Dusty, and everybody in that clubhouse was really worried last night," Speier said.
Baker left Wrigley Field more than two hours before Wednesday night's game, and it was initially announced he would have chest X-rays to "rule out pneumonia."
Baker, 63, managed his 3,000th career game Tuesday against Chicago. He has also managed the Cubs and Giants.
Speier said he saw no warning signs that Baker was not feeling well.
"I think everybody at this time of year, everybody is a little beat up, everybody is a little tired," Speier said. "He's done it for so long. He's a little bit used to it, but I was thinking about it last night: 'Wow, he's done this for 3,000 games.'"