CHICAGO (AP) The Chicago Cubs' scramble to get as much of a massive renovation of Wrigley Field done before next month's opening day hit a bump Tuesday when Mayor Rahm Emanuel dashed the team's hopes of winning city approval to keep construction crews working around the clock.

"The city ordinance is clear that you can't have 24-hour building," the mayor told reporters, who also made a point of saying that whatever the Cubs told the media about extending the hours of construction, they had not raised the issue with him.

Team officials, who said that they need pick up the pace of the project because winter weather has put construction behind schedule, tried to assure people that whatever they said Monday about asking the city to let construction go "more 24/7" was not what they would seek.