The final four of the Champions League was always going to be interesting as Germany and Spain battled it out for a place in the final.
With Borussia Dortmund facing Real Madrid on Wednesday evening, all eyes were on the Allianz Arena on Tuesday night as Barcelona travelled to Bayern Munich for their first leg of the semi-final.
And come the final whistle, it would have a huge majority around the world talking about a changing of the guard. Barcelona's complete inability to defend Bayern's set pieces saw them leave Germany trailing by 4-0 and facing a monumental task at home to the German giants.
With Bayern on such fantastic form both domestically and in Europe, many mouths would have been watering as this tie was drawn out of the bag. With Barcelona set to take the La Liga crown back from rivals Real Madrid and Bayern doing the same to Dortmund in Germany, this tie was always going to attract the attention of the footballing world.
Being a goal down at half-time, Barca needed to fight back but they found themselves dominated by a well-disciplined Bayern side, and come the final whistle they had suffered their worst defeat in 16 years, which was also a 4-0 loss in the Champions League, at the hands of Dynamo Kiev.
And with Messi subdued again, just as he was with in Milan at the away tie of the last 16 draw, Barca could not prise a vital away goal they would have so desperately wanted given the four scored by the home side.
They may have had some cause for argument, given that Bayern's second from Mueller had a hint of offside about it, but all in all they were taught a lesson by the German masters and they were ruthless once they found the weak spot in Barcelona's play. Having already secured the Bundesliga title, they then went on to put on this fantastic display, and with the newly confirmed signing of Dortmund playmaker Mario Goetze, next season already looks promising for Bayern.
The question now is whether Barca can pull themselves back from this huge deficit at home in the Camp Nou. Having already achieved a turnaround against Milan following a first leg disappointment, you can never write the Catalans off.
But on this occasion, it is a massive difference in score and against a team that is a as well disciplined and tactically clever as any team in the world.
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