CHICAGO (AP) — Wrigley Field is ready for the bleacher bums. The Chicago Cubs say expanded bleachers in left and center field will open today when the New York Mets visit. The right-field bleachers are to open next month. The bleachers will feature new group spaces, improved concessions and more room for fans to socialize and watch the game. The work is part of a multiyear overhaul of the 101-year-old ballpark and surrounding area.