Taiwo Awoniyi netted again to help Union Berlin beat Borussia Dortmund 2-1.
The Liverpool forward opened the scoring - his fourth goal in his last six Bundesliga appearances - as his loan club claimed an impressive victory on Friday night. Loris Karius was an unused substitute in the German capital.
Marko Grujic and Kamil Grabara also enjoyed wins. Grujic came off the bench as FC Porto overcame Nacional 2-0, while Grabara kept a clean sheet in AGF Aarhus’ 3-0 win against Aalborg.
In the Championship, Harvey Elliott’s Blackburn Rovers lost 1-0 to Stoke City and Cardiff City - with both Harry Wilson and Sheyi Ojo in their starting XI - were defeated 2-0 by table-topping Norwich City.