Borussia Dortmund let slip a two-goal lead before recovering to blast four goals in 16 minutes as they maintained their perfect start to the season with a thrilling 6-2 victory over Hamburg SV on Saturday.
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New signing Pierre-Emerick Aubameyang and Robert Lewandowski netted twice each, Marco Reus capped a virtuouso performance with a goal and Henrikh Mkhitaryan completed the scoring as the Bundesliga leaders made it five wins out of five.
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Champions Bayern Munich, also unbeaten and two points behind in second place, rode their luck to beat Hanover 96 2-0 while the club's former player Luiz Gustavo was sent off again for his new team VfL Wolfsburg as they lost 3-1 at Bayer Leverkusen.
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Kevin-Prince Boateng's first goal for Schalke 04 earned a 1-0 win at Mainz 05 and Tobias Werner grabbed a stoppage-time goal to give Augsburg a 2-1 home triumph over second from bottom Freiburg who are still without a Bundesliga victory this season.
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Vaclav Kadlec's double helped Eintracht Frankfurt win 3-0 at Werder Bremen who had Franco Di Santo sent off after 26 minutes for a dangerous high challenge which left Bastian Oczipka's face splattered with blood.
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Dortmund got off to a flying start when Aubameyang and Mkhitaryan put them 2-0 ahead after 22 minutes, only to see Hamburg level through Zhi-Gin Lam's curling shot and a Heiko Westermann header. New signing Mkhitaryan then combined with Aubameyang before the Gabon forward scored with an angled shot in the 65th minute and Lewandowski added a fourth goal after being set up by a brilliant Reus dummy in the 73rd.
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Reus made it 5-2, nonchalantly rolling the ball in after the Hamburg defence twice failed to clear, before Lewandowski headed the sixth with nine minutes to go.
Borussia Dortmund is known for emphatic wins like this so no surprises. Their coach teach his players good stuff!