Borussia Dortmund opened their 2025 Bundesliga campaign with a commanding 3–0 victory over Union Berlin on Sunday, 31 August 2025, at a sold-out Signal Iduna Park. The Matchday 2 fixture kicked off at 15:30 UTC under the supervision of referee Daniel Schlager, who sent both sides to the tunnel with Dortmund leading 1–0 at half-time. The result gave the home side a perfect six points from their first two matches of the regular season.

For Dortmund, the clean-sheet win reinforced their ambitions ...