Overview

• Bayern enter Friday’s home match with a perfect league record and a Bundesliga-best 18 goals through four games.
• Werder Bremen travel without first-choice goalkeeper Mio Backhaus due to a shoulder injury, and loanee Victor Boniface is in contention for his first Bundesliga start.
• Reports indicate Kim Min-jae has recovered from a calf issue and may feature for Bayern, with Jamal Musiala, Alphonso Davies, Hiroki Ito and Josip Stanišić still unavailable.
• Dortmund sit second and carry a 12-match league unbeaten run into Saturday’s trip to Mainz after adopting a back three under Kovač.
• Mainz lifted confidence with a 4-1 win at Augsburg but must replace long-term absentee Anthony Caci and suspended midfielder Dominik Kohr.