GIANTS AT CHICAGO CUBS Friday: Giants' Madison Bumgarner (0-5, 4.21ERA) vs. Ryan Dempster (1-4, 7.20), 11:20 a.m. CSNBA Saturday: Giants' Ryan Vogelsong (2-0, 3.05)vs. Doug Davis (0-0, 0.00), 4:10 p.m. FOX Sunday: Giants' Tim Lincecum (3-3, 2.11) vs.Carlos Zambrano (4-1, 4.35), 11:20 a.m. CSNBA