Schalke 's Klaas - Jan Huntelaar rattled the post with a fine low drive .
Wolfsburg struck four times in the second half with Robin Knoche tapping in from close range and Vieirinha shaking off two defenders to fire past keeper Timo Hildebrand .
Schalke 's Klaas - Jan Huntelaar rattled the post with a fine low drive but Wolfsburg struck four times in the second half with Robin Knoche tapping in from close range and Vieirinha shaking off two defenders to fire past keeper Timo Hildebrand .