His second miss was more glaring .
After 31 minutes a cross from Alexis Sanchez eluded Dortmund goalkeeper Roman Weidenfeller , only for the ball to get trapped beneath Welbeck 's feet at the far post .
Roman Weidenfeller 's second miss was more glaring .
After 31 minutes a cross from Alexis Sanchez eluded Dortmund goalkeeper Roman Weidenfeller , only for the ball to get trapped beneath Welbeck 's feet at the far post .