The Cubs are probably even hotter than the Mets who just swept the Phillies—but their pitching is vulnerable, just what a Phillies offense full of underlying successes could use. Justin Klugh and Liz Roscher discuss the coming weekend at Wrigley Field, as does author Stuart Shea, who talks about his book, “Wrigley Field: The Long Life and Contentious Times of the Friendly Confines."