Dan Otero relieved Tomlin .
Russell greeted Dan Otero with a blast into the center field bleachers for the first World Series grand slam in Cubs history , stretching the lead to 7 - 0 .
Dan Otero relieved Tomlin , and Russell greeted Otero with a blast into the center field bleachers for the first World Series grand slam in Cubs history , stretching the lead to 7 - 0 .