Borussia Dortmund's Marco Reus and Raphael Guerreiro scored a goal apiece to beat visitors Union Berlin 2-0 on Wednesday.
Bundesliga leaders Bayern Munich drew 1-1 at home against Union Berlin on Saturday after conceding an 86th minute equaliser.
Hertha Berlin rescued a 1-1 draw at local rivals Union in the capital's derby on Sunday but remain mired in a battle to avoid relegation.
Bundesliga strugglers Arminia Bielefeld earned a point on coach Frank Kramer's debut with a goalless draw against European hopefuls Union Berlin.
Union Berlin's Florian Hubner was banned two games after a confrontation with Bayer Leverkusen's Nadiem Amiri but cleared of racially abusing him.
Emil Forsberg drilled in a second-half winner as RB Leipzig were made to work hard for a 1-0 victory over in-form Union Berlin.
The German FA is investigating allegations of racism in Friday's Bundesliga match between Union Berlin and Bayer Leverkusen.
Substitute Cedric Teuchert scored an 88th minute winner as Union Berlin stunned Bayer Leverkusen 1-0 on Friday to climb to fourth place.
"We will not start chasing our players and ask them whether their wives are barbers," a Union Berlin spokesperson said.
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