Borussia Dortmund suffered a 3-1 defeat against Mainz 05, marking their fourth consecutive away loss in the Bundesliga this season. The game shifted dramatically when Dortmund's captain Emre Can received a straight red card in the 27th minute, allowing Mainz to take control. Lee Jae-sung opened the scoring for Mainz in the 36th minute, and Serhou Guirassy equalized for Dortmund with a penalty shortly after. However, Mainz regained the lead just before halftime with a goal from Jonathan Burkardt and extended their advantage in the second half with a goal from Paul Nebel. Dortmund's poor away form continues to hinder their season, leaving them in seventh place with 16 points, while Mainz sits in ninth. Head coach Nuri Şahin's team struggles away from home, having yet to secure a victory on the road this season.