Bayern Munich moved up to second in the Bundesliga with an emphatic win at last term's runners-up RB Leipzig.
Robert Lewandowski opened the scoring for Bayern, recorded his sixth goal of the campaign with a penalty.
Teenager Jamal Musiala volleyed the second shortly after the break, before teeing up Leroy Sane for the third.
Konrad Laimer superbly pulled a goal back for the hosts but Eric Maxim Choupo-Moting rounded off the scoring for the visitors late on.
Defending champions Bayern are now two points behind leaders Wolfsburg, who maintained their 100% winning start with a 2-0 victory at SpVgg Greuther Furth.
Leipzig have lost three of their opening four matches under new coach Jesse Marsch.