Watch: Valdes' nightmare slip assists Valencia goal

Victor Valdes did his best Steven Gerrard impression Sunday after his slip in the box saw an opportunistic Antonio Valencia walk the ball into a wide open net to help Manchester United secure a 3-1 win over Middlesbrough.

The host was pressing for an equaliser before the Ecuador international burst up the flank and into the Boro end. After losing possession, Valencia made a token run into the box to pressure Valdes as the former United 'keeper looked set to clear the ball.

Instead, Valdes hit the deck and watched Valencia score the easiest goal of his life, while overjoyed United manager Jose Mourinho celebrated by running down the tunnel with his fists in the air and a minute on the clock.