Brandon Belt extended his success against Colorado starter Jon Gray with a three-run homer and a double to lead the San Francisco Giants past the Rockies 4-3 on Wednesday night. Belt's two hits raised his career average against Gray to .417 (10 for 24) and helped Logan Webb (1-0) get his first win in his fourth start of the season. Nolan Arenado homered for the third straight game for the Rockies, who had their four-game winning streak snapped.