Merrill Kelly threw eight innings of three-hit ball, Carson Kelly had a pair of doubles and the Arizona Diamondbacks beat the skidding San Francisco Giants 7-0 on Monday night. The right-hander retired the first 15 batters he faced, but gave up a leadoff double to Luis Gonzalez in the sixth. It was a rare blemish in another stellar performance for the 33-year-old Kelly (10-5), who lowered his ERA to 3.04.