For me, in the last month or so, Santon has been a bit meh defensively (down to his positioning really) so to see him do so well in that aspect today was a really good/encouraging thing to see.
his positioning has been ok. the lack of covering has been atrocious. good job simpson knows his place lest it would happen on both flanks. today he never really got forward so no covering was needed.
For me, he still needs a bit of work on his positioning and today was a step in the right direction. This lad is going to be great, that I'm confident of.