SAN DIEGO — Only one thing could stop the Giants on an eight-day trip through Phoenix and San Diego: The day off.Other than Monday's breather, the Giants went to sleep every night having pocketed a win. A 3-1 victory at Petco Park on Thursday night clinched a 7-0 trip, the first for the franchise since the 1913 team went 8-0 on a trip in the middle of the summer. Missing Millbrae Father Killed, Body Found in Sonoma County Field Following complete games by Madison Bumgarner and Johnny Cueto, Jeff Samardzija allowed just three hits and struck out eight in eight innings. He retired the final 19 hitters he faced and was pulled only because manager Bruce Bochy wanted to give the MLB leader in pitches thrown a breather. Samardzija threw 105 pitches, the final one a 96 mph fastball.Buster Posey's sacrifice fly gave Samardzija an early lead, and while he gave the run back in the top of the second, he did work around trouble to prevent further damage. Jon Jay hit a leadoff double in the first and was stranded. Alexi Amarista reached third with two down in the second but Samardzija struck out opposing pitcher James Shields. 'Sick of Poverty': Sanders Says in Bay Area Stops An error...