Munich: Bayern Munich are on the verge of their third Champions League final in four years after routing Barcelona 4-0 in the semi-final, first leg. (Agencies)
It was the Spanish giants worst European defeat since the 1997 group stage 4-0 loss to Dynamo Kiev.
Germany star Thomas Mueller was Barca's chief tormentor with goals in each half yesterday while striker Mario Gomez and Dutch wing Arjen Robben also netted to give Bayern a huge advantage for the return leg at the Camp Nou on May 1.
The stunning performance came at the end of a remarkable day even by Bayern's standards.
First they announced they had signed young German star Mario Goetze from arch-rivals Borussia Dortmund for a reported 37 million euros.
Then it was reported that in March club president Uli Hoeness caught up in a tax evasion scandal, was arrested and released on bail after a police raid on his home.
But he was at the Allianz Arena to witness an incredible night for the hosts. Barcelona's Argentinian superstar Lionel Messi started, despite struggling with a hamstring injury since the start of the month, but the world player of the year was a shadow of his usual self.
Bayern had an early penalty appeal turned down, but the hosts went ahead when Robben's lobbed cross from a corner was headed across goal by centre-back Dante for Mueller to place his header inside the far post on 24 minutes.
Munich: Bayern Munich are on the verge of their third Champions League final in four years after routing Barcelona 4-0 in the semi-final, first leg.