Started out the game VERY well and promising, missed a chance and his confidence plumetted. Seems to me like he gets himself a negative self-talk loop and takes himself out of the game and his confidence/mojo. Once he missed that first chance it was downhill from there (and he then missed another chance).
But like estranged said if you only focus on the negatives you'll only see the negatives. For the first half of the game he played very well and far better than Pedro has all season. You could just tell he was feeling it... he was beating defenders, playing solid passes/touches, everything.
He needs to get some of the mental strength Messi, Iniesta, Puyol etc possess. Gets too down on himself and becomes his worst enemy far too often, needs to chill and stay in his element.