Serge Gnabry celebrates with  teammate Leon Goretzka after scoring his team's second goal during the 4-0 defeat of Borussia Dortmund at the Allianz Arena.
CNN  — 

Robert Lewandoski extended his remarkable record of scoring in every Bundesliga match since the start of the season as Bayern Munich thrashed arch-rival Borussia Dortmund 4-0 in ‘Der Klassiker’ Saturday.

Reigning champion Bayern dominated from the start in its Allianz Arena stadium with Polish international Lewandowski grabbing a double as he was on the scoresheet for the 11th straight league match.

It was a far cry from the sorry 5-1 defeat at Eintracht Frankfurt last Saturday which marked the end of Nico Kovac’s spell in charge and left Bayern’s title defense on shaky foundations.

The emphatic victory has lifted Bayern up to third in the standings, one point adrift of leader Borussia Moenchengladbach, which can extend the advantage at home to Werder Bremen Sunday.

Dortmund has slipped to fifth, three points adrift after a disappointing afternoon for Lucien Favre’s men.

It was the second straight win for interim Bayern coach Hansi Flick, who will stay in charge for the next match against Fortuna Dusseldorf on November 23, the club has confirmed after reports that former Arsenal manager Arsene Wenger had been approached over the vacant job.

Bayern chairman Karl-Heinz Rummenigge told Sport 1: “We will work with Hansi Flick until further notice. I have respect for Arsene. We will call him and clear things up. I don’t want to stress him.”

Making light of the off-field troubles, Bayern was quickly off the mark in the classic fixture, with Lewandowski powering home a superb header from a Benjamin Pavard cross on 17 minutes.

Robert Lewandowski heads Bayern Munich ahead against Borussia Dortmund as he maintained his record of scoring in every Bundesliga match since the start of the season.

Dortmund star winger Jadon Sancho was substituted as early as the 36th minute as he failed to make an impact and shortly after the break Serge Gnabry fired home the second after Lewandowski had failed to convert from close range.

Lewandowski made no mistake later in the half, his 23rd of the season having scored in all of Bayern’s fixtures in the league and Champions League this campaign.

A Mats Hummels own goal completed a miserable afternoon for Dortmund.

“We were very focused, we knew we had to give 100 percent and improve,” said Lewandowski after the match.

30th anniversary marked

Earlier, RB Leipzig went to second in the Bundesliga, heading Bayern on goal difference with a 4-2 win at Hertha Berlin in the Olympic stadium.

Before the match, to mark the 30th anniversary of the fall of the Berlin Wall, players stood on either side of a replica wall which had been built to mark the historic events of November 9th, 1989.

Players from Hertha Berlin and RB Leipzig line up on either side of a replica of the Berlin Wall before a Bundesliga match at the Olympic Stadium held on the 30th anniversary of the fall of the original wall.

The wall was symbolically knocked down prior to the start of the match which saw a fine start for the host as midfielder Maximilian Mittelstaedt scored the opener in the first half.

However, Timo Werner equalized from the penalty spot for the visitor and Marcel Sabitzer added Leipzig’s second on the stroke of the halftime break.

Leipzig midfielder Kevin Kampl put his side 3-1 ahead with a superb strike before Werner grabbed his second for his 11th league goal in as many games.

Hertha striker Davie Selke grabbed a late second for his side against his former club.