Rockies rookie right-hander Jon Gray decided Saturday he doesn’t have to always be the talented guy whose inexperience bites him. By using his slider and curveball effectively from the beginning, Gray schooled the Giants by holding them to one hit, with five strikeouts against two walks, in seven scoreless innings. As his luck would have it, Gray’s work didn’t earn him a victory — the Rockies lost, 2-1, in 13 innings.