Ralf Rangnick displayed his meticulous attention to detail following Manchester United's win over Crystal Palace as he pinpointed mistakes by both Fred and Scott McTominay.
Both the Brazilian and the Scotsman looked assured as United kept their first cleansheet at Old Trafford this season, and the interim boss was quick to heap praise on their defensive showing.
However, the German was also keen to stress the importance of sticking to his requests and pinpointed moments in the match where the pair had failed to heed his instructions.
Rangnick had instructed his side to avoid playing square passes, with the team playing a narrow 4-2-2-2 formation and the possiblity of a counter-attacking Palace side able to seize on a loose square pass part of his thinking.