Borussia Dortmund plundered three goals in 10 second-half minutes to return to the Bundesliga summit with a 5-0 thrashing of Cologne on Sunday.
Leading 2-0 at the break, the hosts turned on the style in a scintillating spell after the interval as Pierre-Emerick Aubameyang and Maximilian Philipp both bagged braces - the latter claiming his first goals for the club.
Sokratis Papastathopoulos also got in on the scoring fun to extend the hosts' unbeaten start to their league campaign.
On the back of their Europa League drama away to Arsenal on Thursday, bottom-placed Cologne posed few problems throughout the match and never recovered from Philipp's second-minute opener.
Dortmund twice benefited from the intervention of the Video Assistant Referee, but it was Aubameyang's quickfire double after the restart which turned the contest into a rout.
Andriy Yarmolenko also starred following his superb Champions League goal against Tottenham as Peter Bosz's side recovered from that 3-1 loss to canter to victory and a fourth straight Bundesliga clean sheet.