Can't remember exactly when it happened (and really don't fancy rewatching the game to find out), but at some point in the second half Trent went off the end of the pitch at the Kop End chasing a ball at speed. I think he took a little while to come back on, and I mentioned to my mate he looked a bit shaken. Given how his performance got worse as he game went on I almost wonder if he had a touch of the Karius's?