SAN FRANCISCO >> Unpacking a 12-6 loss is a messy task, maybe more so when it involves the Dodgers and the Giants. There's a rivalry there, and the sold-out crowd on hand for the home opener at AT&T Park was feeling it Thursday.Played out in reverse, it was a nightmare for the Dodgers. Hunter Pence hit a grand slam on Pedro Baez's sixth pitch of the eighth inning, which prompted the crowd of 41,940 to reprise its chants of "Beat L.