The Cubs have fired hitting coach Rudy Jaramillo. James Rowson, Chicago's minor league hitting coordinator, was named interim hitting coach. The 35-year-old joined the Cubs organization in the offseason after spending the past six seasons in the Yankees organization. The Cubs ranked fifteenth in the 16-team National League in on-base percentage at .304 at the start of play Tuesday. They were 14th in runs scored at 222 and 10th in batting average at .247.