CINCINNATI (AP) -- Scott Rolen 's homer started a four-run rally in the seventh inning that swept the Cincinnati Reds to a 4-2 victory Wednesday night, extending the San Francisco Giants ' misery at Great American Ball Park.
Rolen's first homer since July 6 ended Barry Zito 's shutout and got into the Giants' bullpen, which let the game get away on a rain-slicked field.
Clay Hensley (1-2) threw wildly for an error after slipping as he fielded a bunt. Jeremy Affeldt 's wild pitch allowed the go-ahead run to score.
It was another miserable game for the Giants at Great American, where they've dropped seven straight and 12 of 16. Zito remains winless there in six starts.
Jose Arredondo (2-0) had one perfect inning. Sean Marshall pitched the ninth and remained perfect in four save chances.