Cincinnati Reds manager Dusty Baker remained in a Chicago hospital Thursday to have more tests for an irregular heartbeat, MLB.com reported.
Baker did not attend Thursday's game against the Cubs, and bench coach Chris Speier acted as the Reds manager for the second straight game.
"He's in doing another test. We should get results on that fairly shortly," Speier told reporters before Thursday's game. "It all looks good. I think the plan is to probably wait to see what the results of that test are."
According to the Reds media relations department, Baker told Reds general manager Walt Jocketty that he was feeling pretty good.
Baker, 63, is scheduled to be monitored at the hospital throughout Thursday, then return to Cincinnati on Friday.
It has not been determined whether Baker will manage Friday's game against the Dodgers.
Baker left the ballpark about two hours before Wednesday's game time to get a chest X-ray after the symptoms arose. He has not been back to the ballpark since.
Baker managed the 3,000th game of his career on Tuesday and is second in wins among active managers.
--Oakland A's left-handed pitcher Brett Anderson will be out for the rest of the regular season with an oblique strain, manager Bob Melvin said Thursday.
It's uncertain whether Anderson might return if the A's reach the playoffs.
Dan Straily is expected to start in Anderson's place on Monday in Texas.
Anderson left in the third inning of Wednesday's loss to the Tigers with soreness in his oblique. That was just the sixth start of the season for Anderson, who is returning from Tommy John surgery.
He had allowed only two earned runs over his first 26 innings, but yielded eight runs to the Angels and Tigers in his past two outings combined.
---The Chicago White Sox won't exercise the $22 million option on pitcher Jake Peavy's contract, according to a CBS Sports report.
Peavy will receive a $4 million buyout, and become a free agent after the season.
The 31-year-old righty has come back strongly from a shoulder injury to post a 3.26 ERA and 177 strikeouts in 198 innings, though his record is 11-11 for the first-place White Sox.