Jadon Sancho scored and recorded his 50th Bundesliga assist as Borussia Dortmund beat Arminia Bielefeld.
The 20-year-old England international, making his 99th German top-flight appearance, laid the ball off for Mahmoud Dahoud to score from 20 yards early in the second half.
Sancho then scored a penalty after Amos Pieper fouled Marco Reus.
Real Madrid loanee Reinier Jesus added a late third after some unselfish play by Erling Braut Haaland.
Dortmund are fifth in the Bundesliga table after a run of three wins in a row in all competitions.