Borussia Dortmund's Youssoufa Moukoko became the youngest player to score in the Bundesliga as his side lost 2-1 to Union Berlin.
The striker, aged 16 years and 28 days, equalised on the hour mark.
Union's goals were both from set pieces with on-loan striker Liverpool Taiwo Awoniyi and Marvin Friedrich scoring.
Dortmund, who sacked Lucien Favre as manager on Sunday in the wake of the 5-1 thrashing by Stuttgart, are fourth in the league.
Moukoko, who was born in Cameroon, but plays for Germany's Under-20s, became the Bundesliga's youngest player earlier this season when he made his top-flight debut against Hertha Berlin on 22 November a day after turning 16.
He then became the youngest player to feature in a Champions League match as his side beat Zenit St Petersburg on 9 December.
