Thought he had one of his better games for quite some time, but what the hell do I know.
What did you like about his performance ?
I write down the team, then a + for anything good that they do, and a - for any poor moments. For this match, I didn't notice Mata doing anything good or anything bad either. It was all relatively straightforward passes. The stats say he saw quite a lot of the ball (62 touches), high pass completion rate (91%), one key pass for McTominay's header wide, no shots, 1 interception, 1 failed attempt to tackle, 1 unsuccessful dribble, dispossessed once.
I noted a cross from Mata that was cut-out in the first half, as well as the wide free-kick from which McTominay should have got his header on target (probably worth a + in my rating system). In the 2nd half, a cross that was slightly too high for Martial, then a good team move that ended with Mata's cross/pass being cut-out. Finally, Dan James' cross that seemed to go between Mata's legs.
This season, I liked Juan's performance against Southampton. I thought he linked the play well and his run off the ball created enough space for Dan James to score. Against West Ham his run off the ball for the big chance from Pereira's cross was great but the finish was shocking, apart from that he seemed to opt to go back when he had options to pass the ball forwards, on several occasions. Struggling to recall much from the Newcastle match. He had a shot from an angle that was saved against Leicester. AZ Alkmaar another quiet game.
Understat have Mata's expected goals per 90 mins at 0.21, and his expected assists per 90 mins 0.07 (PL matches). 1.49 key passes per 90 mins. Statsbomb have his expected goals per 90 mins at 0.19, and his expected assists 0.08. In simple terms, he had one big chance to score (from Pereira's cross against West Ham) and the chances he has created have tended to be low percentage shots from distance
Sometimes on 2nd viewing I have a very different opinion of how a player performed but I don't feel like watching that match again.