Jadon Sancho was on target for Borussia Dortmund as they romped to a 5-0 victory over Duisburg in the first round of the DFB-Pokal.
The England international has been heavily linked with a move to Premier League giants Manchester United, although Dortmund do not appear to be keen on parting with their most prized asset.
Sancho got them on their way at the Schauinsland-Reisen-Arena with a 14th-minute penalty before Jude Bellingham, an off-season signing from Birmingham City, marked his debut with a goal after half an hour.
Any hopes the hosts had of clawing their way back into the game were dashed shortly before the interval when Dominic Volkmer was dismissed for a professional foul on Erling Haaland, Thorgan Hazard added a third from the resulting free-kick.
Giovanni Reyna and Marco Reus then added gloss to the scoreline in the second half as Dortmund warmed up for their Bundesliga opener against Borussia Monchengladbach on Sunday (AEST) in style.