They gave up four homers at Wrigley for the first time since 2012 .
The loss was the Cubs ' worst since a 14 - 3 defeat July 3 against the Mets .
Cubs gave up four homers at Wrigley for the first time since 2012 .
The loss was the Cubs ' worst since a 14 - 3 defeat July 3 against the Mets .