With Guardiola as manager, Barça have never lost at the Bernabéu, and 5 players have started all those 4 games in Madrid. Valdes, Alves, Pique, Xavi, and Messi have been indispensable for Pep in Madrid. Their performances were decisive in the recent victories away at their eternal rival.

Valdés

The goalkeeper has played all 360 minutes of the last 4 away games in Madrid. He’s only let in 3 goals (in the 6-2 win 3 years ago, and in last year's league game), but in the 2 other games he kept a clean sheet. Especially important was the fact that he kept a clean sheet in the first leg of the semifinals of the Champions League last season.

Alves and Pique

Alves and Pique are doubtful at the moment (with Guardiola they have been certain starters in the Bernabéu). The Brazilian only arrived in Barcelona on Thursday, and has only trained 3 times with the squad after playing in the Copa America, and Pique is recovering from a hamstring pull in his right leg. Whatever happens, Pique wants to be there.

Xavi

In midfield, Xavi has played 14 matches in Madrid and the balance is quite positive with 5 wins, 4 draws and 5 losses. The last defeat was back in 2008, with Frank Rijkaard as manager. Xavi has had a lot to do with Barça’s success. Two assists of his paved the way to victory 2 years ago in the Bernabeu

Messi

The Argentine striker always wants to play and has not missed any of the last 4 games in Madrid. 4 games to remember and he was decisive in all of them. His 6 goals helped Barça to 3 wins and a draw.