During a softer portion of their schedule, Giants starters routinely kept them in games, the offense rewarded them with clutch hits and the callups and no-names contributed. The Giants displayed all of that in Friday night's 6-4 victory against the Diamondbacks, fueled by the bottom of a spring split-squad lineup. Cory Gearrin had a perfect eighth against Arizona's 2-3-4 hitters and Santiago Casilla saved it with a huge assist from Brandon Belt and Brandon Crawford, who turned a tough 3-6-3 double play with runners on the corners and nobody out. Cueto walked none, struck out nine and won his ninth consecutive decision, the Giants' longest streak in 12 years, The Giants improved to 15-2 in Cueto's starts and 5-0 at Chase Field in this odd rivalry. After Thursday's long night game in Oakland, the Giants did not arrive at their Phoenix hotel until 3 a.m., so Bochy canceled batting practice on the field and had his infielders take groundballs. Bochy gave Buster Posey a planned night off then scratched Denard Span with a sore neck, leaving Crawford, Belt and Angel Pagan the only Opening Day players in Friday's lineup. Green hit a two-run single to get the Giants close and Brown gave the Giants a 5-4 lead with a two-run double in the sixth. On Friday, he gave up two in four innings, a two-run Wellington Castillo drive in a three-run first inning and Jake Lamb's solo in the third. [...] came Friday's three-run first inning, when Jean Segura and Paul Goldschmidt doubled for one run and Castillo homered on a 3-2 pitch with two outs.