Coufal is one of the best right backs in the league both going forward and defensively granted Torres didn't have the best game but he's certainly not going to have a game against someone of that quality in a while anyway - usually, he'll be playing on the front foot as the opposing full back won't offer much offensively.
Things to work on for sure, but, with zinchenko not offering an overlap because he was playing a more inverted role he didn't have much in terms of support, Coufal had one man to worry about and did his job well.
Torres still had the occasional moment, you know - sometimes, an opposing player can play well without ours having played so badly they're deserving of such criticism, Coufal is really good, Honestly reminds me a lot of Zaba.