Overview
- Referee Daniel Schlager mistakenly showed a red card to Ethan Nwaneri in the 17th second and immediately changed it to a yellow before play restarted.
- The decision followed a forceful tackle by Nwaneri that struck Tom Rothe at the ankle and drew the referee's attention.
- Minutes after the card incident the match was stopped when dense smoke from a large Union Berlin choreo on the Waldseite drifted across the pitch.
- Had the red stood it would have surpassed the Bundesliga record for the earliest sending-off, which currently stands at 43 seconds.
- The quick correction shows referees can amend decisions on the spot before play resumes, and the smoke stoppage may lead to post-match review of supporter displays and possible sanctions.