With replacements in the starting and closing roles, San Francisco edged the Los Angeles Dodgers 1-0 Thursday behind Joe Panik's homer off Clayton Kershaw. Kershaw, a three-time NL Cy Young Award winner, took his first loss in his franchise-record eighth consecutive opening day start. Ty Blach opened in place of injured ace Madison Bumgarner, who is on the disabled list along with fellow starter Jeff Samardzija and closer Mark Melancon.