Valbuena, Sweeney power Cubs with clutch homers

Ryan Sweeney drove in four runs, including three on his second homer of the year, Travis Wood hit a solo shot and Luis Valbuena smacked a go-ahead two-run blast with one out in the seventh to power the Cubs to a 7-6 victory over the Cardinals on Friday in front of 41,534, the largest crowd of the season at Wrigley Field.