When the Los Angeles Dodgers play host to the Chicago Cubs in the opener of a four-game series, the first 40,000 fans will get a Joe Kelly bobblehead, although, presumably, some might decline. Kelly has a 7.59 ERA in 22 relief outings, and his most recent appearance, Monday against the Los Angeles Angels, might have been his worst. For all the Dodgers' prowess this season, one of their few weaknesses is their bullpen.