Bayern Munich top scorer Robert Lewandowski struck again as the German champions demolished Hoffenheim 4-0 on Saturday.
First-half goals from Emre Can and Mats Hummels and a sensational effort by Jude Bellingham steered Dortmund to a 3-1 win in Bielefeld.
Borussia Dortmund striker Erling Haaland will be out for "a couple of weeks" with a hip muscle injury, coach Marco Rose said on Friday.
It would have been reasonable to expect a swoon from Bayern Munich under a new manager and with a rebuilt defense, but they look better than ever.
Erling Haaland will command wages of at least £30 million-a-year if he leaves Borussia Dortmund for a new club next summer, sources told ESPN.
Real Madrid and Bayern Munich are confident of signing Antonio Rudiger as his contract deadlock continues at Chelsea, sources have told ESPN.
Bayern Munich thrashed Bayer Leverkusen 5-1 on Sunday as Julian Nagelsmann's side ran riot and silenced a stunned BayArena.
Borussia Dortmund's Erling Haaland scored twice on his return from injury to help his team beat Mainz 3-1 on Saturday to go top of the Bundesliga.
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