Robert Lewandowski is number 11 in 90min's Top 20 Greatest Footballers of the Decade series. Follow the rest of the series over the course of the next three weeks.
He was hardly unknown when Real Madrid visited the Westfalenstadion in the Champions League semi-final in 2013, but Robert Lewandowski still lacked any sort of genuine fear factor for the travelling centre-backs.
The Polish striker was entering his third year in Germany after a £4.2m move from Lech Poznan, having scored just nine goals in his first season before netting a much more impressive 30 across all competitions the next.