Rafa mentioned post match that Merino had "little issues" coming back from international duty. Now that could be anything from a niggle to tactical issues and with Rafa, I can't call it.
Explains why he came on from the bench and perhaps why he wasn't at his usual standard. Although, I do think that it was a torrid game to be in our midfield. The way the game was ebbing, made it so difficult to get into a rhythm.