Jake Arrieta regained his form right after Anthony Rizzo's towering drive landed in the bleachers in right field. Arrieta struck out 11 in eight innings, Rizzo drove in four runs and the Chicago Cubs remained perfect against the Pittsburgh Pirates with an 8-2 victory on Saturday. Arrieta improved to 18-0 with a microscopic 0.75 ERA in 20 regular-season starts since Aug. 1. More...