Japan midfielder Shinji Kagawa scored his first goal of the season as Bundesliga leader Dortmund won 3-0 away to Hamburg on Wednesday.
Kagawa, making his first start of the league campaign, opened the scoring after 24 minutes, driving home from close range after Omer Toprak had headed down Andriy Yarmolenko's free kick.
Pierre-Emerick Aubameyang grabbed Dortmund's second midway through the second half with an easy tap-in at the far post and Christian Pulisic sealed the win with 10 minutes left, rattling in off the far post.