Overview
- Borussia Dortmund won 2-0 at Mainz on September 27, with Daniel Svensson scoring in the 27th minute and Karim Adeyemi adding a second in the 40th.
- Julian Brandt, a late starter after Serhou Guirassy withdrew in the warm-up with a thigh issue, provided the assists for both goals.
- Mainz goalkeeper Robin Zentner was sent off in the 67th minute for a last-man foul on Adeyemi, leaving the hosts with 10 men.
- Dortmund remain unbeaten and sit two points behind Bayern Munich after five matches, as Leipzig also won and Leverkusen edged St. Pauli.
- Leverkusen saw Patrik Schick and Álex Grimaldo suffer late knocks, Fabio Silva made his Dortmund debut as a substitute, and Mainz must plan without Zentner due to suspension.