Vine: A mistake from Eto'o gives Atleti a penalty which Costa tucks away easily

Chelsea fall behind at home as Diego Costa's penalty gives Atleti a huge advantage

Smauel Eto'o was only on the field a few minutes when he made a big impact on the outcome of the game, but in the wrong way, as his tackle and foul on Diego Costa gave Atléti a penalty.

Diego Costa was booked for time wasting as he attempted to get the ball to sit on the spot sweetly, but he didn't let that put him off as he slammed the ball home.