As much as Mata doesn't exactly have a super human level of stamina, we need to stop championing for him to be rested after just 1-2 non-performances, like really. The game against Liverpool was his 3rd game in a week but that is already normal for him and especially after he had a week off before the City game. It wasn't his greatest of performances but people need to stop behaving like just because he didn't score 3 goals and get 3 assists, he needs to be rested completely from the next game.