By Jojo Doria

Barcelona, Spain

Barcelona is considered the best club team in the world, now it has to go out and prove it.

Barca trails Spanish rival Real Madrid in the La Liga standings and is down against Chelsea in its Champions League semifinal after a 1-0 loss at Stamford Bridge Wednesday night.

Holders of both the Spanish league and the Champions League trophies, Barcelona has an all-important four-day stretch coming up that will determine if it has any chance to hold on to either title.

Barcelona hosts Madrid at Camp Nou in a key Spanish League match Saturday and then faces Chelsea on Tuesday in the second leg of their Champions League showdown.

Didier Drogba gave Chelsea the goal it needed with a tally in first-half stoppage time. The Blues then held on for the crucial victory despite Barcelona's huge edge in possession time.

Barcelona was a bit unlucky as well as Alexis Sanchez hit the crossbar in the ninth minute and Pedro Rodriguez hit a post in second-half injury time. It was the first Champions League loss in 14 months for Barcelona, which is looking to become the first team to win consecutive titles since AC Milan in 1989-90.

In the Spanish League, Madrid has a four-point lead on Barcelona after 33 games.

Saturday's match is the last meeting of the season between the Spanish Giants and only four games remain after the clash.

Barcelona Up Against It in Champions League and La Liga