Union Berlin went four points clear at the top of the Bundesliga with victory over Borussia Dortmund, as Bayern Munich moved up to second place with a 5-0 win over Freiburg.
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Janik Haberer tapped Union’s opener into an empty net after Dortmund keeper Gregor Kobel slipped with the ball.
Union doubled their lead when Haberer smashed in an unstoppable second from outside the box.
Bayern overtook Freiburg, who started the day second, with an easy win.
Serge Gnabry headed them into the lead, with Eric Maxim Choupo-Moting drilling a shot into the bottom corner.
Leroy Sane hit a stunning third from 20 yards, Sadio Mane netted his fifth Bundesliga goal with a lovely lob, and Marcel Sabitzer finished the scoring.
Bayern are looking for an 11th consecutive league title, but site behind Union, who are spending just their fourth season in the top flight in their 56-year history.
