On this day in 2018, Robert Lewandowski returned to haunt his former club with a hat-trick in a 6-0 Bayern rout over Dortmund in Der Klassiker.
It was the biggest margin of victory in the rivalry since 1971, when Bayern recorded an 11-1 win.
In 2017-18 season, Lewandowski won the Golden Boot in Bundesliga with 29 goals, at least 14 more than any other player in the campaign.