Mekrel you've yet to name me a player who doesn't make a mistake in a game?
So Nani cut back once and his touch let him down. If he didn't do stuff like that then he wouldn't score the incredible goals he does. No winger beats his man every time, no target man wins the header every time. If you want to criticise someone for making a bad decision or not getting a pass/first touch/shot right every time then you might as well criticise the entire team every game.
De Gea - Couple of times his clearances went out of play
Valencia - One time let Crouch turn him far too easily
Jones - Easily beaten for their goal
Rio - Positioning was poor for a couple of crosses in the second half
Evra - Silly yellow card, didn't control Pennant well
Fletcher - Lost the ball once in our half
Anderson - Couple of his passes were cut out
Nani - As mentioned, loose control once
Young - Dwelled on the ball when he got into the area once
Hernandez - Only last 6/7 mins
Owen - Poor control a couple of times
Berbatov - Took a bit too long on the ball