Overview

• Daniel Svensson (27') and Karim Adeyemi (40') scored in the first half, with both goals set up by Julian Brandt.
• Mainz finished with 10 men after goalkeeper Robin Zentner was sent off in the 67th minute for bringing down Adeyemi.
• Dortmund remain unbeaten and sit two points behind leaders Bayern Munich, who beat Werder Bremen 4-0 on Friday.
• Serhou Guirassy withdrew during the warm-up with a thigh issue, and coach Niko Kovač said his availability for Athletic Bilbao is uncertain.
• Elsewhere, Bayer Leverkusen won 2-1 at St. Pauli but saw late injuries to Patrik Schick and Álex Grimaldo, RB Leipzig won 1-0 at Wolfsburg, and Eintracht Frankfurt beat Gladbach 6-4.