Youssoufa Moukoko's powerful header gave Borussia Dortmund a 1-0 victory over local rivals Schalke 04 in the Ruhr valley derby on Saturday to send them top of the Bundesliga.
The 17-year-old headed in at the far post in the 79th minute to take Dortmund to the summit on 15 points.
There was bad news for the hosts, however, as their captain Marco Reus was carried off with what looked like a serious ankle injury.
The Germany international, who was called up for the Nations League matches against Hungary against England this month, had turned his ankle in the 32nd minute.
Reus sat out Germany's 2014 World Cup-winning run after being injured in their final warmup game before their departure to Brazil. He also missed Euro 2016 due to injury.
Bayern slump to shock 1-0 loss at Augsburg to stretch winless run
Champions Bayern Munich suffered a shock 1-0 loss to hosts Augsburg in the Bundesliga on Saturday to stretch their winless run to four consecutive league matches and drop to fourth place.
Mergim Berisha slotted in a cutback with a composed finish in the 59th minute to seal the three points and pile more pressure on Bayern coach Julian Nagelsmann.
The hosts were not intimidated by Bayern at any stage and their seven shots on goal were almost double Bayern's total in the opening half.
The Bavarians, fresh from their Champions League group win over Barcelona in midweek, lacked a clinical finish with both Sadio Mane and Leroy Sane having their share of chances.
Germany international Sane should have levelled in the 73rd when he had only Augsburg's Rafal Gikiewicz to beat but the keeper stood his ground to block his shot.
He then made a sensational double save in stoppage time to protect Augsburg's lead.
Bayern are on 12 points, three off leaders Borussia Dortmund. Augsburg climbed up to 11th place on nine.