PITTSBURGH — James McDonald pitched six dominant inning and Gaby Sanchez hit a tiebreaking two-run home run Saturday night to lead the Pittsburgh Pirates to a 3-1 victory over the Atlanta Braves. In quite a contrast to his previous start, McDonald (2-2) struck out nine while allowing only one run on two hits. McDonald was tagged for eight runs in 1 2/3 innings on Monday in a loss to St. Louis.