Marlins 5, Giants 0: Giancarlo Stanton homered and Tom Koehler threw seven shutout innings as visiting Miami blanked San Francisco.Koehler (4-3) bounced back from a dismal outing against the Dodgers by striking out seven and allowing four hits for Miami, which improved to 4-6 on its 11-game road trip. Adeiny Hechavarria and Stanton had two hits apiece, and the Marlins won for the 14th time in their last 18 games in San Francisco.Hechavarria gave Miami an early lead with an RBI single in the second off Tim Lincecum (3-3), who allowed three runs while striking out six over six frames. Lincecum ran into trouble in the sixth, when Casey McGehee hit a leadoff double, Garrett Jones tripled, and Jarrod Saltalamacchia followed with a sacrifice fly to left field.Stanton extended Miami's lead with a two-out solo homer in the seventh off David Huff, and pinch-hitter Jeff Baker contributed an RBI single in the ninth. Stanton is batting .319 (22-for-69) with nine doubles, a triple, five home runs and 12 RBIs in 17 career games at AT&T Park.San Francisco, which has lost three of its last five, loaded the bases with two outs in the ninth against Kevin Slowey before Steve Cishek struck out Tyler Colvin for his ninth save and second in as many games. Hector Sanchez went 3-for-3 for the Giants, who went 0-for-6 with runners in scoring position. GAME NOTEBOOK: Giants CF Angel Pagan appeared to injure his left shoulder when diving to make a catch on Jones's triple in the sixth inning, but he stayed in the game and finished hitless in four at-bats. … Koehler allowed four runs with five walks while throwing 103 pitches over 3 2/3 innings against the Dodgers last Monday. ... The Giants have not won a series at home against the Marlins since 2009.