Dortmund were handed an early advantage into the kick-off as Budu Zivzivadze saw red for Heidenheim after only 21 minutes. Not long after that, Guirassy opened their account for the evening with a stunning header into the far corner as Julian Ryerson picked him out inside the box with a perfectly-weighted cross.
Then in the sixth minute of added time in the opening stanza, Beier made it 2-0 with an easy finish from inside the box as Karim Adeyemi expertly evaded his marker before laying it off for him with a simply cross-field pass.
Dortmund appeared to take their feet off the pedal in the second half, perhaps keeping an eye on the upcoming Juventus fixture in the Champions League, but Heidenheim never seemed like they'd claw their way back into the game. Two wins in three for Dortmund in the 2025-26 Bundesliga season.
Here are the player ratings:
Goalkeeper: Gregor Kobel - 7.5/10
With the hosts putting up a toothless display in attack, Gregor Kobel had a comfortable 90 minutes in goal as he had to make just one save during the time frame. Perhaps, the Dortumund custodian could have cooked up barbeque in goal and still have come away with a clean sheet.