Brandon Crawford drove in four runs and Jarrett Parker homered to lead Jeff Samardzija and the streaking San Francisco Giants past the San Diego Padres 8-2 on Tuesday night. Buster Posey and Denard Span each knocked in a run for the Giants, who have won four straight and 12 of 13. John Jay homered for the Padres, who lost their third in a row and fell to 0-8 against the Giants this season.