Ryan Doumit drove in four runs and scored three times Wednesday, leading Pittsburgh to an 8-2 win over the Chicago Cubs and a sweep of a doubleheader. The Pirates won the opener 4-0 and have captured four of their last five games.

Adam Dunn had three hits including a three-run homer Monday to lead the Washington Nationals to an 8-4 victory over the Pittsburgh Pirates. Cristian Guzman was 2-for-4 with two RBI, two runs scored and a walk.

Charlie Morton and two relievers combined on a five-hit shutout Saturday, leading the Pittsburgh Pirates to a 2-0 win over the San Francisco Giants. Morton (2-2) surrendered three hits in seven innings with two walks and six strikeouts. John Grabow pitched a 1-2-3 eighth and closer Matt Capps recorded

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Ryan Doumit won the starting catching job for Pittsburgh last season and now the Pirates are rewarding him with a three-year contract. The Pirates also will have options on Doumit for the 2012 and 2013 seasons.