Cowboys top Vikings at Metrodome

Alan Ball scored a touchdown on a blocked 17, in a preseason game Saturday.

Tony Romo completed 15-of-20 passes for 141 yards for Dallas, while Donovan McNabb was 12-of-18 for 164 yards, a touchdown and an interception for the Vikings.

It was the first game held at the Metrodome since the roof collapsed during a massive snow storm last December, forcing the Vikings to play their final two home games of the season in alternate venues.