5 Lessons from Prem weekend: Ten Hag blew it for Man Utd; Chelsea downgrade worked; Lampard exposed

Manchester United paid for Erik ten Hag's caution at Arsenal. Graham Potter found a solution for Chelsea at Liverpool. And Frank Lampard's tactics were exposed at West Ham. Here's five lessons we learned from the latest round of the Premier League...

1) Odegaard dominates thanks to Ten Hag errors

Erik ten Hag got the tactical calls wrong in this match, and on another day Arsenal would have won convincingly. His decision to leave Fred on the bench and select a more attacking formation came as a surprise but ultimately there was logic to it, with Manchester United successfully pressing Arsenal in all areas of the pitch and bravely forcing the hosts to work hard for their victory.

However, it did not make sense for Scott McTominay to stick on Granit Xhaka, because it allowed Martin Odegaard to frequently run off the back of Christian Eriksen. United needed to man-mark Odegaard, or at least have a better plan for Arsenal's numerical advantage in midfield; with Oleksandr Zinchenko moving into the middle and Xhaka replacing him on the left, the visitors were pulled around too much.