Madison Bumgarner fully expected the silent treatment from his teammates after hitting the first home run of his major league career. He received the cold shoulder in the San Francisco dugout only briefly before being mobbed by Pablo Sandoval and others, another highlight in what is shaping up to be a stellar season for the young left-hander. Bumgarner had a season-high 12 strikeouts and his home run provided the biggest blow for the Giants' offense in a 6-3 victory over the Houston Astros on Tuesday night.