Don't Want to Imagine the Results if Messi Played for Atletico: Diego Simeone

Atletico Madrid coach Diego Simeone said the brilliance of Lionel Messi was the only real difference between his side and Barcelona after the irrepressible Argentine's sublime free kick goal decided Sunday's top-of-the-table La Liga showdown.

Mess's stinging set-piece strike in the 26th minute gave Barca a 1-0 win in a tight game of few chances, lifting the Catalans eight points ahead of Atletico at the top with 11 games remaining.

"If we took the Barcelona shirt off Messi and gave him an Atletico one I'm sure we'd have won 1-0," Simeone told a news conference.

"He plays like he is playing on the streets."

Barca manager Ernesto Valverde also paid tribute to Messi, who scored his 600th career goal and netted a free kick for the third consecutive game.

"There's no-one like him in the world. I don't know what would have happened if he played for Atletico, I don't want to even imagine it," Valverde said.

"When you are on the other side you always think Messi is going to score, your sense of fear is far stronger when he is your rival. When he is on your side, you are always hopeful," added Valverde, who suffered repeatedly against Messi while in charge of Athletic Bilbao.

Atletico could have reduced the gap behind Barca to two points with victory at the Nou Camp yet they did not manage a single shot on target throughout the 90 minutes and were particularly unimaginative in the first half.

They improved after the break when Simeone threw on forwards Kevin Gameiro and Angel Correa but the coach denied his tactics were to blame for the defeat.

"The game is 90 minutes and there's always stages when you don't play well. There were very few chances in the game and while we didn't attack in the first half, in the second we were closer to being the team we truly are," Simeone said.

The Argentine admitted it was difficult to imagine Barca throwing away their eight-point lead at the top and Valverde said it was a significant win for Barca.

"It was a very important game because being eight points ahead is not the same as two," Valverde added.

"It's obviously not definitive but we have taken a step towards it. We'll see what the future holds."