Reliever Jean Machi and the San Francisco Giants took advantage of a huge baserunning blunder by Pittsburgh, tagging out two runners who wandered away on the same play and beating the Pirates 7-5 Wednesday to end a six-game losing streak.San Francisco Giants' Tim Lincecum works against the Pittsburgh Pirates in the first inning of a baseball game Wednesday, July 30, 2014, in San Francisco.Pittsburgh Pirates' Charlie Morton works against the San Francisco Giants in the first inning of a baseball game Wednesday, July 30, 2014, in San Francisco.San Francisco Giants' Gregor Blanco swings for an RBI single off Pittsburgh Pirates' Charlie Morton in the first inning of a baseball game Wednesday, July 30, 2014, in San Francisco.San Francisco Giants pitcher Tim Lincecum (55) waits for Pittsburgh Pirates' Jordy Mercer to run the bases after Mercer's two run home in the fifth inning of a baseball game Wednesday, July 30, 2014, in San Francisco.