SAN FRANCISCO — Buster Posey homered with one out in the 17th inning and the San Francisco Giants beat the Cincinnati Reds for the first time this season with a 3-2 victory Friday night.Posey sent the first pitch he saw from Robert Stephenson (0-2) over the left-field wall for his fourth homer of the week, ending the marathon game after 5 hours, 28 minutes and 480 pitches. The Giants rushed out of the dugout to celebrate with Posey while the few fans remaining cheered. Alameda County Sheriff's Deputy Rear-Ended by Bus, Killed "It wouldn't have been fun to lose this," Posey said. "We were out of pitching, fortunately got it done there."Cory Gearrin (1-1) escaped a bases-loaded jam in the top of the 16th by striking out Billy Hamilton. He then stranded two more runners in the 17th to earn the win. Psychologist Expected in Sierra LaMar Murder Case: Documents The Reds had won all four meetings so far between the teams, outscoring the Giants 34-7 in those games. They had plenty of chances to win this one as well as they put multiple runners on base in three of the final four innings without scoring.The best chance came in the 14th when Cincinnati put runners on second and third...