Tek has been excellent for most of his time here. This recent drop in form has been dramatic and costly, no question, but it didn't exist until deep into this season. Is it possible that in Tek we are seeing the clearest example of the mental fatigue from having not played under a competent manager since Allegri. Sure GK is not a position that should be so influenced by tactics but Tek is human and months of watching those in front of him fail has got to have taken an effect on his morale, focus, motivation whatever.