Hamburg have come from behind to defeat Borussia Dortmund 4-1 away from home in the Bundesliga.
Son Heung-Min almost made it 2-1 to Hamburg just moments later but saw his effort come off the post.
The South Korean attacker, though, did not have to wait long to etch his name on the scoresheet, as he put the visitors in the lead on 26 minutes.
Things went from bad to worse for Dortmund just after the half-hour mark when Lewandowski was dismissed following a confrontation with Rafael van der Vaart, who was shown a yellow card.
Hamburg too went down to 10 men after the break, as Bruma was given his marching orders for his challenge on Reus on the hour mark.
However, two minutes later Hamburg scored their third goal of the afternoon, Rudņevs heading home Van der Vaart's cross at the far post.
Son made it 4-1 to the visitors at Signal-Iduna Park when he tapped in Marcell Jansen's pass a minute from full time.