Barcelona won a very tactical El Clasico on Saturday to move six points clear of Real Madrid and end the weekend still a point ahead of Atletico at the top of La Liga.Here's what I made of some of the key men on the field at the Camp Nou. Messi Obviously Messi is not on top form. He chose his moments to defend and attack well, but going back to the wing offers one defensive problem as he cannot be tracking back all the time. This was his second full game in five days after being out injured for three weeks. This is a World Cup year and that will be in everybody's mind this season. Neymar He had a good game. Intelligently he stuck to the wing and didn't come inside too often, looking for the one v one. He made a great assist and scored a goal in his first El Clasico, which shows he's a man for the big games. However, on the downside, he seems to make decisions too late and always wants to finish the move. Bale He got another 60 minutes under his belt, which is important. It has not been decided yet if Angel di Maria, Bale and Ronaldo will be the three attackers but it is a possibility in certain games. They need to create the conditions for a counterattacking game to use their pace, though, which didn't happen in the first half. Victor Valdes The Barcelona keeper was their best player. He has also decided to leave the club rather than change his mind. So watch this space... Alexis Sanchez Alexis has been saying he is a super player. Well, he showed with his goal and also in the way he understood his role - using the space left behind the Madrid defenders - that he can be a top player. His introduction was a good substitution by Martino. Sandro Rosell The Barcelona president will be especially happy with this win, as his two men, Neymar and Martino, emerged with more credibility.