But Memphis was so sluggish in covering walker who was his man. Blind shouldn't have to do much there because the pass to Walker should have been handled by Memphis. We've seen Martial do that so many times. Part of the defensive duties of the wingers is to contain the opposing full backs and Memphis has always botched that. Of course I don't even think he should be as defensively sound as a defender but you could just see the lack of urgency in his movement. He was on pace with Walker and just slowed down like it was nothing. It's getting more obvious why he's not getting playing time I think.

EDIT: look at his body language and tell me you'll ever see Martial or Lingard do that during a game.