Some awful awful 1v1 defending by Pique. He pretty much did the exact opposite of everything he should have done to stop the play.
Needless backpedaling instead of challenging the player -
check
Giving position to the player -
check
Not using Mascherano's solid supporting run to his advantage -
check
Not forcing the player wide -
check
Giving the player the middle of the field without challenge for the easy inside cut -
check
Not challenging the shot after he fucked up all other previous opportunities to stop the player -
check
If they ever want a visual aid to teach a youngster what NOT to do while defending 1v1, by all means, use this example. It is textbook NOT to do stuff.