Chicago’s Ben Zobrist returns to the dugout after hitting a three-run home run in the Cubs’ win on Wednesday. (AP Photo/Keith Srakocic) Associated Press PITTSBURGH – Ben Zobrist hit a three-run homer, Anthony Rizzo also connected and Jon Lester worked out of a pair of jams to lead the Chicago Cubs over the Pittsburgh Pirates 6-2 Wednesday for a three-game sweep. Zobrist’s third-inning homer put Chicago ahead after center fielder Andrew McCutchen dropped Rizzo’s two-out liner for an error.