Deniz Undav scored a brace as a rampant VfB Stuttgart put on a spectacular display to stun Borussia Dortmund 5-1 at home on Sunday, handing Nuri Sahin's side their first defeat of the Bundesliga season.
Undav got Stuttgart off to a flying start inside five minutes at the MHP Arena when the forward found Maximilian Mittelstadt's pass, stormed into the box and fired the ball into the far bottom corner.
Last season's runners-up tore apart the stunned visitors' defence, with Mittelstadt providing Ermedin Demirovic with a chipped cross to head home and double their lead in the 21st minute.
After Enzo Millot added a third, former Stuttgart man Serhou Guirassy reduced Dortmund's deficit with a goal in the 72nd minute, but substitute El Bilal Toure and Undav made matters worse as they added another goal each to Stuttgart's tally to make it 5-1.
Dortmund sit eighth in the Bundesliga with seven points from four matches, while Stuttgart are sixth with the same points but a better goal difference.
