Dortmund goalkeeper, Gregor Kobel, makes horrific mistake vs Bayern Munich | OneFootball

Borussia Dortmund goalkeeper, Gregor Kobel, made a horrific mistake during Der Klassiker against Bayern Munich.

Dayot Upamecano played a long pass from inside his own half looking for the run of Leroy Sane.

Kobel came out of his penalty area to clear his lines.

However, he could only get a tiny touch on the ball as he largely kicked air.

The ball bounced past him and into his empty net.

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Sane, who perhaps feared he was offside from the original pass, didn't touch the ball as he went in.

Incredible.

The mistake summed up a disastrous first half for the visitors.

Kobel's mistake led to the opening goal of the match in the 13th minute. Within 10 minutes, it was 3-0 as Thomas Muller bagged a brace.

A win for Thomas Tuchel in his first match in charge would put Bayern two points ahead of Dortmund at the top of the Bundesliga.

Tuchel: My sacking at Chelsea still hurts

While Tuchel is now at the Allianz Arena, Tuchel admitted that his sacking from Chelsea still hurts.

"It was a shock. I felt it, strangely, when I drove to the training centre," he told reporters.

"The meeting we had felt unusual - it turned out to be very short. It lasted three to five minutes.

"The decision had been made and, honestly, it was a shock for all of us. I was also not in the mood to talk longer.

"We had a feeling that we were in the right spot at the right time. We felt that we could achieve big things and we wanted to stay longer - it was as simple as that.

"It still hurts in a way. I'm not able to see these people on a daily basis. I love this job. I have a passion for it.

"We built an extraordinary bond in the circumstances. We started there during Covid, during Brexit - then came the change of ownership.