Gerardo Parra hit a grand slam with two outs in the eighth inning Saturday to rally the visiting Washington Nationals to a 5-2 victory over the Los Angeles Dodgers. It was the first hit in a Nationals uniform for Parra, who signed with Washington on Thursday after he was cut loose by the San Francisco Giants earlier in the week. Dodgers starter Walker Buehler held the Nationals scoreless over seven innings before turning things over to the bullpen.