CHICAGO (AP) -- Lou Piniella (pihn-EHL'-uh) needs to take care of his ailing mother, so the Chicago Cubs manager says he's retiring after today's game with visiting Atlanta.
Third base coach Mike Quade has been promoted to interim manager.
The 66-year-old Piniella had said last month that he planned to retire at the end of the season. He missed four games this month to be with his mom in Florida.
Piniella trails only Tony La Russa, Bobby Cox and Joe Torre in victories among active managers.
In 18 years in the majors as a player and another 22 as a manager, Piniella made five trips to the World Series and has three championship rings.