Brandon Belt hit a grand slam, Kevin Pillar had a career-high five hits and Logan Webb won his major league debut as the San Francisco Giants cruised past the Arizona Diamondbacks 11-6 on Saturday night in Phoenix. Belt connected off Taylor Clarke (4-4) as part of a five-run second inning. He also had an RBI single in the third and a run-scoring groundout in the eighth to match his career high with six RBIs.