Another fine pitcher took the mound against the Washington Nationals' resurgent offense Wednesday and met the same result: not just a loss but a whipping by a lineup that, earlier this season, might have succumbed to an early deficit. On this day, without their best power hitter this season or their regular catcher, and facing one of the major leagues' best left-handed starters, the Nationals dispatched the San Francisco Giants, 9-4. They did so with a four-home run day, contributions from two rejuvenated veterans in the middle of their order, their sparkplug backup catcher and an outfielder known mainly for his defense. Everyone, at least for now, can hit.