Former Giants manager Dusty Baker will remain hospitalized in Chicago overnight to take precautionary tests for an irregular heartbeat, MLB announced Wednesday night.
A spokesman for the Cincinnati Reds said Baker left Wrigley Field in street clothes more than two hours before Wednesday night's game to get chest X-rays to "rule out pneumonia."
Bench coach Chris Speier brought the lineup card to home plate and TV cameras showed Speier in the dugout during the game against the Chicago Cubs, but there was no sign of Baker.
The Reds won the game 6-5 in the 11th inning when Drew Stubbs hit a tiebreaking RBI single.
Cincinnati leads the NL Central by 11 games over the St. Louis Cardinals and can clinch the division as early as Thursday with a pair of wins and Cardinals losses.
The Associated Press contributed to this report
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