This from a website which I will not disclose, as it provides me with much information... :p
"Chicago city officials, alarmed by three reports of falling concrete at Wrigley Field since the start of June, said they needed more information from the Cubs before deciding whether it's safe to play Friday's game.
On Thursday, workers at the stadium continued putting up netting to protect fans from falling chunks of concrete. There's a chance, but only a slim one, that Friday's game against the Phillies could be postponed. The city can prevent the game from being played if the netting isn't fully installed or if they conclude it doesn't adequately protect fans."
